90=(11x+2)+(8x+7)

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Solution for 90=(11x+2)+(8x+7) equation:


Simplifying
90 = (11x + 2) + (8x + 7)

Reorder the terms:
90 = (2 + 11x) + (8x + 7)

Remove parenthesis around (2 + 11x)
90 = 2 + 11x + (8x + 7)

Reorder the terms:
90 = 2 + 11x + (7 + 8x)

Remove parenthesis around (7 + 8x)
90 = 2 + 11x + 7 + 8x

Reorder the terms:
90 = 2 + 7 + 11x + 8x

Combine like terms: 2 + 7 = 9
90 = 9 + 11x + 8x

Combine like terms: 11x + 8x = 19x
90 = 9 + 19x

Solving
90 = 9 + 19x

Solving for variable 'x'.

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

Add '-19x' to each side of the equation.
90 + -19x = 9 + 19x + -19x

Combine like terms: 19x + -19x = 0
90 + -19x = 9 + 0
90 + -19x = 9

Add '-90' to each side of the equation.
90 + -90 + -19x = 9 + -90

Combine like terms: 90 + -90 = 0
0 + -19x = 9 + -90
-19x = 9 + -90

Combine like terms: 9 + -90 = -81
-19x = -81

Divide each side by '-19'.
x = 4.263157895

Simplifying
x = 4.263157895

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