Solve for B
B=3
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6=B+B
Add 1 and 5 to get 6.
6=2B
Combine B and B to get 2B.
2B=6
Swap sides so that all variable terms are on the left hand side.
B=\frac{6}{2}
Divide both sides by 2.
B=3
Divide 6 by 2 to get 3.
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