Solve for b
b=6
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2b+9-0.5b=18
Subtract 0.5b from both sides.
1.5b+9=18
Combine 2b and -0.5b to get 1.5b.
1.5b=18-9
Subtract 9 from both sides.
1.5b=9
Subtract 9 from 18 to get 9.
b=\frac{9}{1.5}
Divide both sides by 1.5.
b=\frac{90}{15}
Expand \frac{9}{1.5} by multiplying both numerator and the denominator by 10.
b=6
Divide 90 by 15 to get 6.
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