2(2)-2(-9)=x

Solution for 2(2)-2(-9)=x equation:

Simplifying
2(2) + -2(-9) = x

Multiply 2 * 2
4 + -2(-9) = x

Multiply -2 * -9
4 + 18 = x

Combine like terms: 4 + 18 = 22
22 = x

Solving
22 = x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x' to each side of the equation.
22 + -1x = x + -1x

Combine like terms: x + -1x = 0
22 + -1x = 0

Add '-22' to each side of the equation.
22 + -22 + -1x = 0 + -22

Combine like terms: 22 + -22 = 0
0 + -1x = 0 + -22
-1x = 0 + -22

Combine like terms: 0 + -22 = -22
-1x = -22

Divide each side by '-1'.
x = 22

Simplifying
x = 22