3+5=x-7

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Solution for 3+5=x-7 equation: 


Simplifying
3 + 5 = x + -7

Combine like terms: 3 + 5 = 8
8 = x + -7

Reorder the terms:
8 = -7 + x

Solving
8 = -7 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
8 + -1x = -7 + x + -1x

Combine like terms: x + -1x = 0
8 + -1x = -7 + 0
8 + -1x = -7

Add '-8' to each side of the equation.
8 + -8 + -1x = -7 + -8

Combine like terms: 8 + -8 = 0
0 + -1x = -7 + -8
-1x = -7 + -8

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

Divide each side by '-1'.
x = 15

Simplifying
x = 15

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