a+7=b-7

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Solution for a+7=b-7 equation: 


Simplifying
a + 7 = b + -7

Reorder the terms:
7 + a = b + -7

Reorder the terms:
7 + a = -7 + b

Solving
7 + a = -7 + b

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -7 + a = -7 + -7 + b

Combine like terms: 7 + -7 = 0
0 + a = -7 + -7 + b
a = -7 + -7 + b

Combine like terms: -7 + -7 = -14
a = -14 + b

Simplifying
a = -14 + b

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