Solve 15/8*21/4

$$1 \frac { 5 } { 8 } \times 2 \frac { 1 } { 4 }$$

Evaluate

$$\frac{117}{32}=3.65625$$

Solution Steps

Multiply 1 and 8 to get 8.

$$\frac{8+5}{8}\times \frac{2\times 4+1}{4}$$

Add 8 and 5 to get 13.

$$\frac{13}{8}\times \frac{2\times 4+1}{4}$$

Multiply 2 and 4 to get 8.

$$\frac{13}{8}\times \frac{8+1}{4}$$

Add 8 and 1 to get 9.

$$\frac{13}{8}\times \frac{9}{4}$$

Multiply \frac{13}{8} times \frac{9}{4} by multiplying numerator times numerator and denominator times denominator.

$$\frac{13\times 9}{8\times 4}$$

Do the multiplications in the fraction \frac{13\times 9}{8\times 4}.

$$\frac{117}{32}$$

Factor

$$\frac{3 ^ {2} \cdot 13}{2 ^ {5}} = 3\frac{21}{32} = 3.65625$$