Question

What is the solution to this equation?

x over -2 (fraction) = 18

A. x=-36
B. x=9
C. x=-9
D. x=36

Answer 1

Solve for a variable by undoing the operations done to that the variable. For example, if we multiply x by 10, we need to use the inverse of multiplication. Also known as division.


`(x)/(-2) = 18`

The x variable is being divide by -2. How can we reverse this operation? With multiplication of course.


`(x)/(-2) * -2 = 18 * -2`

`x = -36`

So, x is equal to -36.