Solve (31/2)*(21/5)

$$( 3 \frac { 1 } { 2 } ) \cdot ( 2 \frac { 1 } { 5 } )$$

Evaluate

$$\frac{77}{10}=7.7$$

Solution Steps

Multiply 3 and 2 to get 6.

$$\frac{6+1}{2}\times \frac{2\times 5+1}{5}$$

Add 6 and 1 to get 7.

$$\frac{7}{2}\times \frac{2\times 5+1}{5}$$

Multiply 2 and 5 to get 10.

$$\frac{7}{2}\times \frac{10+1}{5}$$

Add 10 and 1 to get 11.

$$\frac{7}{2}\times \frac{11}{5}$$

Multiply \frac{7}{2} times \frac{11}{5} by multiplying numerator times numerator and denominator times denominator.

$$\frac{7\times 11}{2\times 5}$$

Do the multiplications in the fraction \frac{7\times 11}{2\times 5}.

$$\frac{77}{10}$$

Factor

$$\frac{7 \cdot 11}{2 \cdot 5} = 7\frac{7}{10} = 7.7$$