Question

2x-x=9

What value of x makes the following equation true?
x=-9
x=3
x=9
x=-3​

Answer 1

x=9

Explanation:

2x-x=9

First, we can simplify this equation by doing 2x-x

x = 9

So that's the answer: x = 9

Double check that it works by substituting x = 9 in the original equation:

2x-x=9

2(9) - 9 = 9

18 - 9 = 9

9 = 9

So our answer, x=9, is correct