Solve for b
b=17
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10\times 2=3+b
Multiply both sides by 2.
20=3+b
Multiply 10 and 2 to get 20.
3+b=20
Swap sides so that all variable terms are on the left hand side.
b=20-3
Subtract 3 from both sides.
b=17
Subtract 3 from 20 to get 17.
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