Solve 42/4+87/10=

$$4 \frac { 2 } { 4 } + 8 \frac { 7 } { 10 } =$$

Evaluate

$$\frac{66}{5}=13.2$$

Solution Steps

Multiply 4 and 4 to get 16.

$$\frac{16+2}{4}+\frac{8\times 10+7}{10}$$

Add 16 and 2 to get 18.

$$\frac{18}{4}+\frac{8\times 10+7}{10}$$

Reduce the fraction \frac{18}{4} to lowest terms by extracting and canceling out 2.

$$\frac{9}{2}+\frac{8\times 10+7}{10}$$

Multiply 8 and 10 to get 80.

$$\frac{9}{2}+\frac{80+7}{10}$$

Add 80 and 7 to get 87.

$$\frac{9}{2}+\frac{87}{10}$$

Least common multiple of 2 and 10 is 10. Convert \frac{9}{2} and \frac{87}{10} to fractions with denominator 10.

$$\frac{45}{10}+\frac{87}{10}$$

Since \frac{45}{10} and \frac{87}{10} have the same denominator, add them by adding their numerators.

$$\frac{45+87}{10}$$

Add 45 and 87 to get 132.

$$\frac{132}{10}$$

Reduce the fraction \frac{132}{10} to lowest terms by extracting and canceling out 2.

$$\frac{66}{5}$$

Factor

$$\frac{2 \cdot 3 \cdot 11}{5} = 13\frac{1}{5} = 13.2$$