2b+21=5b

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Solution for 2b+21=5b equation:


Simplifying
2b + 21 = 5b

Reorder the terms:
21 + 2b = 5b

Solving
21 + 2b = 5b

Solving for variable 'b'.

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

Add '-5b' to each side of the equation.
21 + 2b + -5b = 5b + -5b

Combine like terms: 2b + -5b = -3b
21 + -3b = 5b + -5b

Combine like terms: 5b + -5b = 0
21 + -3b = 0

Add '-21' to each side of the equation.
21 + -21 + -3b = 0 + -21

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

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

Divide each side by '-3'.
b = 7

Simplifying
b = 7

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