Solve 5*21/4-2.25

$$5 \times 2 \frac { 1 } { 4 } -2.25$$

Evaluate

$$9$$

Solution Steps

Multiply 2 and 4 to get 8.

$$5\times \frac{8+1}{4}-2.25$$

Add 8 and 1 to get 9.

$$5\times \frac{9}{4}-2.25$$

Express 5\times \frac{9}{4} as a single fraction.

$$\frac{5\times 9}{4}-2.25$$

Multiply 5 and 9 to get 45.

$$\frac{45}{4}-2.25$$

Convert decimal number 2.25 to fraction \frac{225}{100}. Reduce the fraction \frac{225}{100} to lowest terms by extracting and canceling out 25.

$$\frac{45}{4}-\frac{9}{4}$$

Since \frac{45}{4} and \frac{9}{4} have the same denominator, subtract them by subtracting their numerators.

$$\frac{45-9}{4}$$

Subtract 9 from 45 to get 36.

$$\frac{36}{4}$$

Divide 36 by 4 to get 9.

$$9$$

Factor

$$3^{2}$$