Solve 21/6*15/7

$$2 \frac { 1 } { 6 } \times 1 \frac { 5 } { 7 }$$

Evaluate

$$\frac{26}{7}\approx 3.714285714$$

Solution Steps

Multiply 2 and 6 to get 12.

$$\frac{12+1}{6}\times \frac{1\times 7+5}{7}$$

Add 12 and 1 to get 13.

$$\frac{13}{6}\times \frac{1\times 7+5}{7}$$

Multiply 1 and 7 to get 7.

$$\frac{13}{6}\times \frac{7+5}{7}$$

Add 7 and 5 to get 12.

$$\frac{13}{6}\times \frac{12}{7}$$

Multiply \frac{13}{6} times \frac{12}{7} by multiplying numerator times numerator and denominator times denominator.

$$\frac{13\times 12}{6\times 7}$$

Do the multiplications in the fraction \frac{13\times 12}{6\times 7}.

$$\frac{156}{42}$$

Reduce the fraction \frac{156}{42} to lowest terms by extracting and canceling out 6.

$$\frac{26}{7}$$

Factor

$$\frac{2 \cdot 13}{7} = 3\frac{5}{7} = 3.7142857142857144$$