Solve 159/13+-207/13

$$15 \frac{ 9 }{ 13 } +-20 \frac{ 7 }{ 13 }$$

Evaluate

$$-\frac{63}{13}\approx -4.846153846$$

Solution Steps

Multiply 15 and 13 to get 195.

$$\frac{195+9}{13}-\frac{20\times 13+7}{13}$$

Add 195 and 9 to get 204.

$$\frac{204}{13}-\frac{20\times 13+7}{13}$$

Multiply 20 and 13 to get 260.

$$\frac{204}{13}-\frac{260+7}{13}$$

Add 260 and 7 to get 267.

$$\frac{204}{13}-\frac{267}{13}$$

Since \frac{204}{13} and \frac{267}{13} have the same denominator, subtract them by subtracting their numerators.

$$\frac{204-267}{13}$$

Subtract 267 from 204 to get -63.

$$-\frac{63}{13}$$

Factor

$$-\frac{63}{13} = -4\frac{11}{13} = -4.846153846153846$$