7x-9-4x=15

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Solution for 7x-9-4x=15 equation: 


Simplifying
7x + -9 + -4x = 15

Reorder the terms:
-9 + 7x + -4x = 15

Combine like terms: 7x + -4x = 3x
-9 + 3x = 15

Solving
-9 + 3x = 15

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 3x = 15 + 9

Combine like terms: -9 + 9 = 0
0 + 3x = 15 + 9
3x = 15 + 9

Combine like terms: 15 + 9 = 24
3x = 24

Divide each side by '3'.
x = 8

Simplifying
x = 8

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