7x-4+5x+7=90

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Solution for 7x-4+5x+7=90 equation: 


Simplifying
7x + -4 + 5x + 7 = 90

Reorder the terms:
-4 + 7 + 7x + 5x = 90

Combine like terms: -4 + 7 = 3
3 + 7x + 5x = 90

Combine like terms: 7x + 5x = 12x
3 + 12x = 90

Solving
3 + 12x = 90

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 12x = 90 + -3

Combine like terms: 3 + -3 = 0
0 + 12x = 90 + -3
12x = 90 + -3

Combine like terms: 90 + -3 = 87
12x = 87

Divide each side by '12'.
x = 7.25

Simplifying
x = 7.25

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