-3b+21=-8b+6

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Solution for -3b+21=-8b+6 equation:


Simplifying
-3b + 21 = -8b + 6

Reorder the terms:
21 + -3b = -8b + 6

Reorder the terms:
21 + -3b = 6 + -8b

Solving
21 + -3b = 6 + -8b

Solving for variable 'b'.

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

Add '8b' to each side of the equation.
21 + -3b + 8b = 6 + -8b + 8b

Combine like terms: -3b + 8b = 5b
21 + 5b = 6 + -8b + 8b

Combine like terms: -8b + 8b = 0
21 + 5b = 6 + 0
21 + 5b = 6

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

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

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

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

Simplifying
b = -3

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