-13=2b-b-20

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Solution for -13=2b-b-20 equation:


Simplifying
-13 = 2b + -1b + -20

Reorder the terms:
-13 = -20 + 2b + -1b

Combine like terms: 2b + -1b = 1b
-13 = -20 + 1b

Solving
-13 = -20 + 1b

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.
-13 + -1b = -20 + 1b + -1b

Combine like terms: 1b + -1b = 0
-13 + -1b = -20 + 0
-13 + -1b = -20

Add '13' to each side of the equation.
-13 + 13 + -1b = -20 + 13

Combine like terms: -13 + 13 = 0
0 + -1b = -20 + 13
-1b = -20 + 13

Combine like terms: -20 + 13 = -7
-1b = -7

Divide each side by '-1'.
b = 7

Simplifying
b = 7

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