7b+21=b+21

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Solution for 7b+21=b+21 equation:


Simplifying
7b + 21 = b + 21

Reorder the terms:
21 + 7b = b + 21

Reorder the terms:
21 + 7b = 21 + b

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

Combine like terms: 21 + -21 = 0
0 + 7b = 21 + -21 + b
7b = 21 + -21 + b

Combine like terms: 21 + -21 = 0
7b = 0 + b
7b = b

Solving
7b = 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.
7b + -1b = b + -1b

Combine like terms: 7b + -1b = 6b
6b = b + -1b

Combine like terms: b + -1b = 0
6b = 0

Divide each side by '6'.
b = 0

Simplifying
b = 0

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