(a+b)=a-3

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Solution for (a+b)=a-3 equation: 


Simplifying
(a + b) = a + -3

Remove parenthesis around (a + b)
a + b = a + -3

Reorder the terms:
a + b = -3 + a

Add '-1a' to each side of the equation.
a + -1a + b = -3 + a + -1a

Combine like terms: a + -1a = 0
0 + b = -3 + a + -1a
b = -3 + a + -1a

Combine like terms: a + -1a = 0
b = -3 + 0
b = -3

Solving
b = -3

Solving for variable 'b'.

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

Simplifying
b = -3

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