7x+(x+20)=90

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


Simplifying
7x + (x + 20) = 90

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

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

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

Combine like terms: 7x + x = 8x
20 + 8x = 90

Solving
20 + 8x = 90

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + 8x = 90 + -20

Combine like terms: 20 + -20 = 0
0 + 8x = 90 + -20
8x = 90 + -20

Combine like terms: 90 + -20 = 70
8x = 70

Divide each side by '8'.
x = 8.75

Simplifying
x = 8.75

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