-b-6b=21

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Solution for -b-6b=21 equation: 


Simplifying
-1b + -6b = 21

Combine like terms: -1b + -6b = -7b
-7b = 21

Solving
-7b = 21

Solving for variable 'b'.

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

Divide each side by '-7'.
b = -3

Simplifying
b = -3

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