90=5x-4+8x+4

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Solution for 90=5x-4+8x+4 equation:


Simplifying
90 = 5x + -4 + 8x + 4

Reorder the terms:
90 = -4 + 4 + 5x + 8x

Combine like terms: -4 + 4 = 0
90 = 0 + 5x + 8x
90 = 5x + 8x

Combine like terms: 5x + 8x = 13x
90 = 13x

Solving
90 = 13x

Solving for variable 'x'.

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

Add '-13x' to each side of the equation.
90 + -13x = 13x + -13x

Combine like terms: 13x + -13x = 0
90 + -13x = 0

Add '-90' to each side of the equation.
90 + -90 + -13x = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -13x = 0 + -90
-13x = 0 + -90

Combine like terms: 0 + -90 = -90
-13x = -90

Divide each side by '-13'.
x = 6.923076923

Simplifying
x = 6.923076923

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