Solve for b
b=6
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7b-8-5b=4
Subtract 5b from both sides.
2b-8=4
Combine 7b and -5b to get 2b.
2b=4+8
Add 8 to both sides.
2b=12
Add 4 and 8 to get 12.
b=\frac{12}{2}
Divide both sides by 2.
b=6
Divide 12 by 2 to get 6.
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