9x-7+4x=84

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Solution for 9x-7+4x=84 equation:


Simplifying
9x + -7 + 4x = 84

Reorder the terms:
-7 + 9x + 4x = 84

Combine like terms: 9x + 4x = 13x
-7 + 13x = 84

Solving
-7 + 13x = 84

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + 13x = 84 + 7

Combine like terms: -7 + 7 = 0
0 + 13x = 84 + 7
13x = 84 + 7

Combine like terms: 84 + 7 = 91
13x = 91

Divide each side by '13'.
x = 7

Simplifying
x = 7

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