4b-6+b=-21

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Solution for 4b-6+b=-21 equation: 


Simplifying
4b + -6 + b = -21

Reorder the terms:
-6 + 4b + b = -21

Combine like terms: 4b + b = 5b
-6 + 5b = -21

Solving
-6 + 5b = -21

Solving for variable 'b'.

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

Add '6' to each side of the equation.
-6 + 6 + 5b = -21 + 6

Combine like terms: -6 + 6 = 0
0 + 5b = -21 + 6
5b = -21 + 6

Combine like terms: -21 + 6 = -15
5b = -15

Divide each side by '5'.
b = -3

Simplifying
b = -3

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