3b+3s=21

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Solution for 3b+3s=21 equation: 


Simplifying
3b + 3s = 21

Solving
3b + 3s = 21

Solving for variable 'b'.

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

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

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

Divide each side by '3'.
b = 7 + -1s

Simplifying
b = 7 + -1s

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