(x+16)+(7x+20)=90

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Solution for (x+16)+(7x+20)=90 equation: 


Simplifying
(x + 16) + (7x + 20) = 90

Reorder the terms:
(16 + x) + (7x + 20) = 90

Remove parenthesis around (16 + x)
16 + x + (7x + 20) = 90

Reorder the terms:
16 + x + (20 + 7x) = 90

Remove parenthesis around (20 + 7x)
16 + x + 20 + 7x = 90

Reorder the terms:
16 + 20 + x + 7x = 90

Combine like terms: 16 + 20 = 36
36 + x + 7x = 90

Combine like terms: x + 7x = 8x
36 + 8x = 90

Solving
36 + 8x = 90

Solving for variable 'x'.

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

Add '-36' to each side of the equation.
36 + -36 + 8x = 90 + -36

Combine like terms: 36 + -36 = 0
0 + 8x = 90 + -36
8x = 90 + -36

Combine like terms: 90 + -36 = 54
8x = 54

Divide each side by '8'.
x = 6.75

Simplifying
x = 6.75

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