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4d+2
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4d+2
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\frac{1}{5}\times 10+\frac{1}{5}\times 20d
Use the distributive property to multiply \frac{1}{5} by 10+20d.
\frac{10}{5}+\frac{1}{5}\times 20d
Multiply \frac{1}{5} and 10 to get \frac{10}{5}.
2+\frac{1}{5}\times 20d
Divide 10 by 5 to get 2.
2+\frac{20}{5}d
Multiply \frac{1}{5} and 20 to get \frac{20}{5}.
2+4d
Divide 20 by 5 to get 4.
\frac{1}{5}\times 10+\frac{1}{5}\times 20d
Use the distributive property to multiply \frac{1}{5} by 10+20d.
\frac{10}{5}+\frac{1}{5}\times 20d
Multiply \frac{1}{5} and 10 to get \frac{10}{5}.
2+\frac{1}{5}\times 20d
Divide 10 by 5 to get 2.
2+\frac{20}{5}d
Multiply \frac{1}{5} and 20 to get \frac{20}{5}.
2+4d
Divide 20 by 5 to get 4.
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