-6+[25+(-12)]=x

Solution for -6+[25+(-12)]=x equation:

Simplifying
-6 + [25 + (-12)] = x
-6 + [25 + -12] = x

Combine like terms: 25 + -12 = 13
-6 + [13] = x
-6 + 13 = x

Combine like terms: -6 + 13 = 7
7 = x

Solving
7 = 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.
7 + -1x = x + -1x

Combine like terms: x + -1x = 0
7 + -1x = 0

Add '-7' to each side of the equation.
7 + -7 + -1x = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -1x = 0 + -7
-1x = 0 + -7

Combine like terms: 0 + -7 = -7
-1x = -7

Divide each side by '-1'.
x = 7

Simplifying
x = 7