Home -> Tutorials -> Solving equation with one variable finding x
An equation is a mathematical sentence that uses an equal sign, =, to show that two expressions are equal.
You must gather the x's on one side and the numbers on the other. Then you'll be able to solve the problem.
2x + 12 = -4x + 36
Step1:
Gather the x's on one side and the numbers on the other:
2x + 4x = 36 - 12
Step2:
Then, solve for x:
6x = 24
x = 24 $\div$ 6
x = 4
Answer: 4
The United States federal deficit in 2012 was estimated to be $1.09 trillion. There were approximately 314,000,000 people in the U.S. in 2012. How much was the deficit per person? Round to the nearest dollar.
The deficit per person is x (the unknown).
So, x = $\frac{deficit}{people}$
x = $\frac{1090000000}{314000000} = \frac{1090}{314} = 3.47$
Rounded answer: 3