4b-5=21

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Solution for 4b-5=21 equation: 


Simplifying
4b + -5 = 21

Reorder the terms:
-5 + 4b = 21

Solving
-5 + 4b = 21

Solving for variable 'b'.

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

Add '5' to each side of the equation.
-5 + 5 + 4b = 21 + 5

Combine like terms: -5 + 5 = 0
0 + 4b = 21 + 5
4b = 21 + 5

Combine like terms: 21 + 5 = 26
4b = 26

Divide each side by '4'.
b = 6.5

Simplifying
b = 6.5

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