Question

15x-20=6x-(x+2)+(-x+3)

288

likes

1438 views

Answer to a math question 15x-20=6x-(x+2)+(-x+3)

$Expert avatar$

Jayne

4.4

106 Answers

Remove parentheses $(-a)=-a$

$15x-20=6x-(x+2)-x+3$

Group like terms

$15x-20=6x-x-(x+2)+3$

Add similar elements: $ 6x-x=5x$

$15x-20=5x-(x+2)+3$

Expand $5x-(x+2)+3:{\quad}4x+1$

$15x-20=4x+1$

Move $ 20 $to the right side

$15x=4x+21$

Move $ 4x $to the left side

$11x=21$

Divide both sides by $11$

$x=\frac{21}{11}$

Frequently asked questions (FAQs)

What is the value of f(x) = 2x + 5 at x = 3?

What is the equation of an ellipse centered at (h, k) with semi-major axis length a and semi-minor axis length b?

Math question: What is the smallest positive integer value of n in Fermat's Theorem (xn + yn = zn) where n is greater than 2?

New questions in Mathematics

Find 2 numbers that the sum of 1/3 of the first plus 1/5 of the second will be equal to 13 and that if you multiply the first by 5 and the second by 7 you get 247 as the sum of the two products with replacement solution

Let 𝑢 = 𝑓(𝑥, 𝑦) = (𝑒^𝑥)𝑠𝑒𝑛(3𝑦). Check if 9((𝜕^2) u / 𝜕(𝑥^2)) +((𝜕^2) 𝑢 / 𝜕(𝑦^2)) = 0

a ferry travels 1/6 of the distance between two ports in 3/7 hour. the ferry travels at a constant rate. at this rate, what fraction of the distance between the two ports can the ferry travel in one hour?

Use the digits of 1,9,2,3 to come up with all the numbers 98 and 95

Imagine that you are in an electronics store and you want to calculate the final price of a product after applying a discount. The product you are interested in has an original price of $1000 MN, but, for today, the store offers a 25% discount on all its products. Develop an algorithm that allows you to calculate the final price you will pay, but first point out the elements.

Solve the math problem 400 students are asked if they live in an apartment and have a pet: Apartment: 120 Both: 30 Pet: 90 The probability that a randomly selected student not living in an apartment has a pet is

Perpetual annuities are a series of payments whose duration has no end. Explain how can we calculate them, if they have no end?

Use the power rule for logarithms to solve the following word problem exactly. If you invest $1, 000 at 5% interest compounded annually, how many years will it take before you have $2,000?

Show this compound proposition to be true or false. Paris is the capital of England or Rome is the capital of Italy

P(Z<z)=0.1003

30y - y . y = 144

The sick-leave time of employees in a firm in a month is normally with a mean of 100 hours and a standard deviation of 20 hours. Find the probability that the sick-leave time of an employee in a month exceeds 130 hours.

What is 75 percent less than 60

Sabendo+que+o+tri%C3%A2ngulo+ABC+%C3%A9+ret%C3%A2ngulo+e+que+um+de+seus+%C3%A2ngulos+mede+30+quanto+mede+o+terceiro+ tri%C3%A2ngulo

Express the trigonometric form of the complex z = -1 + i.

5x+13+7x-10=99

During a month's time, an automobile sales person receives a 6% commission on the first $5000 in sales, a 7% commission on the next $5000 sales, 8% commission on anything over $10,000. What is her commission for $36,000 in sales?

the product of a 2-digit number and a 3-digit number is about 50000, what are these numbers

Determine the general solution of the equation y′+y=e−x .

Matilde knows that, when driving her car from her office to her apartment, she spends a normal time of x minutes. In the last week, you have noticed that when driving at 50 mph (miles per hour), you arrive home 4 minutes earlier than normal, and when driving at 40 mph, you arrive home 5 minutes earlier later than normal. If the distance between your office and your apartment is y miles, calculate x + y.

15x-20=6x-(x+2)+(-x+3)

Answer to a math question 15x-20=6x-(x+2)+(-x+3)

You might be interested in