Solve for b
b=-1
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\frac{3}{10}\times 20=b+7
Multiply both sides by 20.
\frac{3\times 20}{10}=b+7
Express \frac{3}{10}\times 20 as a single fraction.
\frac{60}{10}=b+7
Multiply 3 and 20 to get 60.
6=b+7
Divide 60 by 10 to get 6.
b+7=6
Swap sides so that all variable terms are on the left hand side.
b=6-7
Subtract 7 from both sides.
b=-1
Subtract 7 from 6 to get -1.
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