Solve 3+2-1*[.8:2]

$$3 + 2 - 1 \times [ .8 : 2 ]$$

Evaluate

$$4.6$$

Solution Steps

Add 3 and 2 to get 5.

$$5-1\times \frac{0.8}{2}$$

Expand \frac{0.8}{2} by multiplying both numerator and the denominator by 10.

$$5-1\times \frac{8}{20}$$

Reduce the fraction \frac{8}{20} to lowest terms by extracting and canceling out 4.

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

Multiply 1 and \frac{2}{5} to get \frac{2}{5}.

$$5-\frac{2}{5}$$

Convert 5 to fraction \frac{25}{5}.

$$\frac{25}{5}-\frac{2}{5}$$

Since \frac{25}{5} and \frac{2}{5} have the same denominator, subtract them by subtracting their numerators.

$$\frac{25-2}{5}$$

Subtract 2 from 25 to get 23.

$$\frac{23}{5}$$

Factor

$$\frac{23}{5} = 4\frac{3}{5} = 4.6$$