Question
15x-20=6x-(x+2)+(-x+3)
288
likes1438 views
Answer to a math question 15x-20=6x-(x+2)+(-x+3)
Jayne
4.4106 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 are the key features of a hyperbola with an equation of (x-h)²/a² - (y-k)²/b² = 1?
+
What is the volume of a rectangular solid with length $l$, width $w$, and height $h$? (
+
What is the median of a set of numbers if the sum of the first and third terms is 20 and the second term is 4?
+
New questions in Mathematics