5x+4(x-2)=91

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Solution for 5x+4(x-2)=91 equation:


Simplifying
5x + 4(x + -2) = 91

Reorder the terms:
5x + 4(-2 + x) = 91
5x + (-2 * 4 + x * 4) = 91
5x + (-8 + 4x) = 91

Reorder the terms:
-8 + 5x + 4x = 91

Combine like terms: 5x + 4x = 9x
-8 + 9x = 91

Solving
-8 + 9x = 91

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + 9x = 91 + 8

Combine like terms: -8 + 8 = 0
0 + 9x = 91 + 8
9x = 91 + 8

Combine like terms: 91 + 8 = 99
9x = 99

Divide each side by '9'.
x = 11

Simplifying
x = 11

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