7x-9=15-x

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


Simplifying
7x + -9 = 15 + -1x

Reorder the terms:
-9 + 7x = 15 + -1x

Solving
-9 + 7x = 15 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
-9 + 7x + x = 15 + -1x + x

Combine like terms: 7x + x = 8x
-9 + 8x = 15 + -1x + x

Combine like terms: -1x + x = 0
-9 + 8x = 15 + 0
-9 + 8x = 15

Add '9' to each side of the equation.
-9 + 9 + 8x = 15 + 9

Combine like terms: -9 + 9 = 0
0 + 8x = 15 + 9
8x = 15 + 9

Combine like terms: 15 + 9 = 24
8x = 24

Divide each side by '8'.
x = 3

Simplifying
x = 3

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