(5x+8)+(x+4)=90

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Solution for (5x+8)+(x+4)=90 equation:


Simplifying
(5x + 8) + (x + 4) = 90

Reorder the terms:
(8 + 5x) + (x + 4) = 90

Remove parenthesis around (8 + 5x)
8 + 5x + (x + 4) = 90

Reorder the terms:
8 + 5x + (4 + x) = 90

Remove parenthesis around (4 + x)
8 + 5x + 4 + x = 90

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

Combine like terms: 8 + 4 = 12
12 + 5x + x = 90

Combine like terms: 5x + x = 6x
12 + 6x = 90

Solving
12 + 6x = 90

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 6x = 90 + -12

Combine like terms: 12 + -12 = 0
0 + 6x = 90 + -12
6x = 90 + -12

Combine like terms: 90 + -12 = 78
6x = 78

Divide each side by '6'.
x = 13

Simplifying
x = 13

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