B=30-4B

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Solution for B=30-4B equation: 


Simplifying
B = 30 + -4B

Solving
B = 30 + -4B

Solving for variable 'B'.

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

Add '4B' to each side of the equation.
B + 4B = 30 + -4B + 4B

Combine like terms: B + 4B = 5B
5B = 30 + -4B + 4B

Combine like terms: -4B + 4B = 0
5B = 30 + 0
5B = 30

Divide each side by '5'.
B = 6

Simplifying
B = 6

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