7x+4+8x-4=90

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Solution for 7x+4+8x-4=90 equation: 


Simplifying
7x + 4 + 8x + -4 = 90

Reorder the terms:
4 + -4 + 7x + 8x = 90

Combine like terms: 4 + -4 = 0
0 + 7x + 8x = 90
7x + 8x = 90

Combine like terms: 7x + 8x = 15x
15x = 90

Solving
15x = 90

Solving for variable 'x'.

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

Divide each side by '15'.
x = 6

Simplifying
x = 6

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