Solve 1/2*(5*3.1)

$$\frac{ 1 }{ 2 } \times (5 \times 3.1)$$

Evaluate

$$7.75$$

Solution Steps

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

$$\frac{5}{2}\times 3.1$$

Convert decimal number 3.1 to fraction \frac{31}{10}.

$$\frac{5}{2}\times \frac{31}{10}$$

Multiply \frac{5}{2} times \frac{31}{10} by multiplying numerator times numerator and denominator times denominator.

$$\frac{5\times 31}{2\times 10}$$

Do the multiplications in the fraction \frac{5\times 31}{2\times 10}.

$$\frac{155}{20}$$

Reduce the fraction \frac{155}{20} to lowest terms by extracting and canceling out 5.

$$\frac{31}{4}$$

Factor

$$\frac{31}{2 ^ {2}} = 7\frac{3}{4} = 7.75$$