Solve 4*4+13-7*21div2=

$$4 \times 4 + 13 - 7 \times 21 \div 2 =$$

Evaluate

$$-\frac{89}{2}=-44.5$$

Solution Steps

Multiply 4 and 4 to get 16.

$$16+13-\frac{7\times 21}{2}$$

Add 16 and 13 to get 29.

$$29-\frac{7\times 21}{2}$$

Multiply 7 and 21 to get 147.

$$29-\frac{147}{2}$$

Convert 29 to fraction \frac{58}{2}.

$$\frac{58}{2}-\frac{147}{2}$$

Since \frac{58}{2} and \frac{147}{2} have the same denominator, subtract them by subtracting their numerators.

$$\frac{58-147}{2}$$

Subtract 147 from 58 to get -89.

$$-\frac{89}{2}$$

Factor

$$-\frac{89}{2} = -44\frac{1}{2} = -44.5$$