b-7=-21

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Solution for b-7=-21 equation: 


Simplifying
b + -7 = -21

Reorder the terms:
-7 + b = -21

Solving
-7 + b = -21

Solving for variable 'b'.

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

Add '7' to each side of the equation.
-7 + 7 + b = -21 + 7

Combine like terms: -7 + 7 = 0
0 + b = -21 + 7
b = -21 + 7

Combine like terms: -21 + 7 = -14
b = -14

Simplifying
b = -14

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