7b-10b=-21

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Solution for 7b-10b=-21 equation: 


Simplifying
7b + -10b = -21

Combine like terms: 7b + -10b = -3b
-3b = -21

Solving
-3b = -21

Solving for variable 'b'.

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

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

Simplifying
b = 7

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