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 = 6
3x = 6

Divide each side by '3'.
x = 2

Simplifying
x = 2

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