Solve 81-18^2*13/169

$$81 - \frac { 18 ^ { 2 } \times 13 } { 169 }$$

Evaluate

$$\frac{729}{13}\approx 56.076923077$$

Solution Steps

Calculate 18 to the power of 2 and get 324.

$$81-\frac{324\times 13}{169}$$

Multiply 324 and 13 to get 4212.

$$81-\frac{4212}{169}$$

Reduce the fraction \frac{4212}{169} to lowest terms by extracting and canceling out 13.

$$81-\frac{324}{13}$$

Convert 81 to fraction \frac{1053}{13}.

$$\frac{1053}{13}-\frac{324}{13}$$

Since \frac{1053}{13} and \frac{324}{13} have the same denominator, subtract them by subtracting their numerators.

$$\frac{1053-324}{13}$$

Subtract 324 from 1053 to get 729.

$$\frac{729}{13}$$

Factor

$$\frac{3 ^ {6}}{13} = 56\frac{1}{13} = 56.07692307692308$$