(-5x+45)+(7x+31)=90

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Solution for (-5x+45)+(7x+31)=90 equation:


Simplifying
(-5x + 45) + (7x + 31) = 90

Reorder the terms:
(45 + -5x) + (7x + 31) = 90

Remove parenthesis around (45 + -5x)
45 + -5x + (7x + 31) = 90

Reorder the terms:
45 + -5x + (31 + 7x) = 90

Remove parenthesis around (31 + 7x)
45 + -5x + 31 + 7x = 90

Reorder the terms:
45 + 31 + -5x + 7x = 90

Combine like terms: 45 + 31 = 76
76 + -5x + 7x = 90

Combine like terms: -5x + 7x = 2x
76 + 2x = 90

Solving
76 + 2x = 90

Solving for variable 'x'.

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

Add '-76' to each side of the equation.
76 + -76 + 2x = 90 + -76

Combine like terms: 76 + -76 = 0
0 + 2x = 90 + -76
2x = 90 + -76

Combine like terms: 90 + -76 = 14
2x = 14

Divide each side by '2'.
x = 7

Simplifying
x = 7

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