(3x+13)+(4x)=90

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Solution for (3x+13)+(4x)=90 equation:


Simplifying
(3x + 13) + (4x) = 90

Reorder the terms:
(13 + 3x) + (4x) = 90

Remove parenthesis around (13 + 3x)
13 + 3x + (4x) = 90

Combine like terms: 3x + (4x) = 7x
13 + 7x = 90

Solving
13 + 7x = 90

Solving for variable 'x'.

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

Add '-13' to each side of the equation.
13 + -13 + 7x = 90 + -13

Combine like terms: 13 + -13 = 0
0 + 7x = 90 + -13
7x = 90 + -13

Combine like terms: 90 + -13 = 77
7x = 77

Divide each side by '7'.
x = 11

Simplifying
x = 11

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