(7x-7)+(4x+15)=84

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Solution for (7x-7)+(4x+15)=84 equation:


Simplifying
(7x + -7) + (4x + 15) = 84

Reorder the terms:
(-7 + 7x) + (4x + 15) = 84

Remove parenthesis around (-7 + 7x)
-7 + 7x + (4x + 15) = 84

Reorder the terms:
-7 + 7x + (15 + 4x) = 84

Remove parenthesis around (15 + 4x)
-7 + 7x + 15 + 4x = 84

Reorder the terms:
-7 + 15 + 7x + 4x = 84

Combine like terms: -7 + 15 = 8
8 + 7x + 4x = 84

Combine like terms: 7x + 4x = 11x
8 + 11x = 84

Solving
8 + 11x = 84

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 + 11x = 84 + -8

Combine like terms: 8 + -8 = 0
0 + 11x = 84 + -8
11x = 84 + -8

Combine like terms: 84 + -8 = 76
11x = 76

Divide each side by '11'.
x = 6.909090909

Simplifying
x = 6.909090909

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