15=2x+5-7

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Solution for 15=2x+5-7 equation: 


Simplifying
15 = 2x + 5 + -7

Reorder the terms:
15 = 5 + -7 + 2x

Combine like terms: 5 + -7 = -2
15 = -2 + 2x

Solving
15 = -2 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
15 + -2x = -2 + 2x + -2x

Combine like terms: 2x + -2x = 0
15 + -2x = -2 + 0
15 + -2x = -2

Add '-15' to each side of the equation.
15 + -15 + -2x = -2 + -15

Combine like terms: 15 + -15 = 0
0 + -2x = -2 + -15
-2x = -2 + -15

Combine like terms: -2 + -15 = -17
-2x = -17

Divide each side by '-2'.
x = 8.5

Simplifying
x = 8.5

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