(3x+4)+(4x-7)=90

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Solution for (3x+4)+(4x-7)=90 equation:


Simplifying
(3x + 4) + (4x + -7) = 90

Reorder the terms:
(4 + 3x) + (4x + -7) = 90

Remove parenthesis around (4 + 3x)
4 + 3x + (4x + -7) = 90

Reorder the terms:
4 + 3x + (-7 + 4x) = 90

Remove parenthesis around (-7 + 4x)
4 + 3x + -7 + 4x = 90

Reorder the terms:
4 + -7 + 3x + 4x = 90

Combine like terms: 4 + -7 = -3
-3 + 3x + 4x = 90

Combine like terms: 3x + 4x = 7x
-3 + 7x = 90

Solving
-3 + 7x = 90

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 7x = 90 + 3

Combine like terms: -3 + 3 = 0
0 + 7x = 90 + 3
7x = 90 + 3

Combine like terms: 90 + 3 = 93
7x = 93

Divide each side by '7'.
x = 13.28571429

Simplifying
x = 13.28571429

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