-3+(-20)=x

Solution for -3+(-20)=x equation:

Simplifying
-3 + (-20) = x
-3 + -20 = x

Combine like terms: -3 + -20 = -23
-23 = x

Solving
-23 = 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.
-23 + -1x = x + -1x

Combine like terms: x + -1x = 0
-23 + -1x = 0

Add '23' to each side of the equation.
-23 + 23 + -1x = 0 + 23

Combine like terms: -23 + 23 = 0
0 + -1x = 0 + 23
-1x = 0 + 23

Combine like terms: 0 + 23 = 23
-1x = 23

Divide each side by '-1'.
x = -23

Simplifying
x = -23