Solve 2.3+3.91div(22-19.7)

$$2.3 + 3.91 \div ( 22 - 19.7 )$$

Evaluate

$$4$$

Solution Steps

Subtract 19.7 from 22 to get 2.3.

$$2.3+\frac{3.91}{2.3}$$

Expand \frac{3.91}{2.3} by multiplying both numerator and the denominator by 100.

$$2.3+\frac{391}{230}$$

Reduce the fraction \frac{391}{230} to lowest terms by extracting and canceling out 23.

$$2.3+\frac{17}{10}$$

Convert decimal number 2.3 to fraction \frac{23}{10}.

$$\frac{23}{10}+\frac{17}{10}$$

Since \frac{23}{10} and \frac{17}{10} have the same denominator, add them by adding their numerators.

$$\frac{23+17}{10}$$

Add 23 and 17 to get 40.

$$\frac{40}{10}$$

Divide 40 by 10 to get 4.

$$4$$

Factor

$$2^{2}$$