-25+[-12]=x

Solution for -25+[-12]=x equation:

Simplifying
-25 + [-12] = x
-25 + -12 = x

Combine like terms: -25 + -12 = -37
-37 = x

Solving
-37 = 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.
-37 + -1x = x + -1x

Combine like terms: x + -1x = 0
-37 + -1x = 0

Add '37' to each side of the equation.
-37 + 37 + -1x = 0 + 37

Combine like terms: -37 + 37 = 0
0 + -1x = 0 + 37
-1x = 0 + 37

Combine like terms: 0 + 37 = 37
-1x = 37

Divide each side by '-1'.
x = -37

Simplifying
x = -37