7x+21-12x+36=-4

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Solution for 7x+21-12x+36=-4 equation:


Simplifying
7x + 21 + -12x + 36 = -4

Reorder the terms:
21 + 36 + 7x + -12x = -4

Combine like terms: 21 + 36 = 57
57 + 7x + -12x = -4

Combine like terms: 7x + -12x = -5x
57 + -5x = -4

Solving
57 + -5x = -4

Solving for variable 'x'.

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

Add '-57' to each side of the equation.
57 + -57 + -5x = -4 + -57

Combine like terms: 57 + -57 = 0
0 + -5x = -4 + -57
-5x = -4 + -57

Combine like terms: -4 + -57 = -61
-5x = -61

Divide each side by '-5'.
x = 12.2

Simplifying
x = 12.2

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