8-2b-11=b+21

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Solution for 8-2b-11=b+21 equation:


Simplifying
8 + -2b + -11 = b + 21

Reorder the terms:
8 + -11 + -2b = b + 21

Combine like terms: 8 + -11 = -3
-3 + -2b = b + 21

Reorder the terms:
-3 + -2b = 21 + b

Solving
-3 + -2b = 21 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
-3 + -2b + -1b = 21 + b + -1b

Combine like terms: -2b + -1b = -3b
-3 + -3b = 21 + b + -1b

Combine like terms: b + -1b = 0
-3 + -3b = 21 + 0
-3 + -3b = 21

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

Combine like terms: -3 + 3 = 0
0 + -3b = 21 + 3
-3b = 21 + 3

Combine like terms: 21 + 3 = 24
-3b = 24

Divide each side by '-3'.
b = -8

Simplifying
b = -8

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