3b-11+b+4=21

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Solution for 3b-11+b+4=21 equation:


Simplifying
3b + -11 + b + 4 = 21

Reorder the terms:
-11 + 4 + 3b + b = 21

Combine like terms: -11 + 4 = -7
-7 + 3b + b = 21

Combine like terms: 3b + b = 4b
-7 + 4b = 21

Solving
-7 + 4b = 21

Solving for variable 'b'.

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

Add '7' to each side of the equation.
-7 + 7 + 4b = 21 + 7

Combine like terms: -7 + 7 = 0
0 + 4b = 21 + 7
4b = 21 + 7

Combine like terms: 21 + 7 = 28
4b = 28

Divide each side by '4'.
b = 7

Simplifying
b = 7

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