B=30-2B

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Solution for B=30-2B equation: 


Simplifying
B = 30 + -2B

Solving
B = 30 + -2B

Solving for variable 'B'.

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

Add '2B' to each side of the equation.
B + 2B = 30 + -2B + 2B

Combine like terms: B + 2B = 3B
3B = 30 + -2B + 2B

Combine like terms: -2B + 2B = 0
3B = 30 + 0
3B = 30

Divide each side by '3'.
B = 10

Simplifying
B = 10

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