7-9x-(x+12)=25

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Solution for 7-9x-(x+12)=25 equation:


Simplifying
7 + -9x + -1(x + 12) = 25

Reorder the terms:
7 + -9x + -1(12 + x) = 25
7 + -9x + (12 * -1 + x * -1) = 25
7 + -9x + (-12 + -1x) = 25

Reorder the terms:
7 + -12 + -9x + -1x = 25

Combine like terms: 7 + -12 = -5
-5 + -9x + -1x = 25

Combine like terms: -9x + -1x = -10x
-5 + -10x = 25

Solving
-5 + -10x = 25

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + -10x = 25 + 5

Combine like terms: -5 + 5 = 0
0 + -10x = 25 + 5
-10x = 25 + 5

Combine like terms: 25 + 5 = 30
-10x = 30

Divide each side by '-10'.
x = -3

Simplifying
x = -3

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