20-7b=6b+21

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Solution for 20-7b=6b+21 equation:


Simplifying
20 + -7b = 6b + 21

Reorder the terms:
20 + -7b = 21 + 6b

Solving
20 + -7b = 21 + 6b

Solving for variable 'b'.

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

Add '-6b' to each side of the equation.
20 + -7b + -6b = 21 + 6b + -6b

Combine like terms: -7b + -6b = -13b
20 + -13b = 21 + 6b + -6b

Combine like terms: 6b + -6b = 0
20 + -13b = 21 + 0
20 + -13b = 21

Add '-20' to each side of the equation.
20 + -20 + -13b = 21 + -20

Combine like terms: 20 + -20 = 0
0 + -13b = 21 + -20
-13b = 21 + -20

Combine like terms: 21 + -20 = 1
-13b = 1

Divide each side by '-13'.
b = -0.07692307692

Simplifying
b = -0.07692307692

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