Solve (-1/2)(-3,4+0,8-0,7)

$$( - \frac { 1 } { 2 } ) ( - 3,4 + 0,8 - 0,7 )$$

Evaluate

$$1,65$$

Solution Steps

Add -3,4 and 0,8 to get -2,6.

$$-\frac{1}{2}\left(-2,6-0,7\right)$$

Subtract 0,7 from -2,6 to get -3,3.

$$-\frac{1}{2}\left(-3,3\right)$$

Convert decimal number -3,3 to fraction -\frac{33}{10}.

$$-\frac{1}{2}\left(-\frac{33}{10}\right)$$

Multiply -\frac{1}{2} times -\frac{33}{10} by multiplying numerator times numerator and denominator times denominator.

$$\frac{-\left(-33\right)}{2\times 10}$$

Do the multiplications in the fraction \frac{-\left(-33\right)}{2\times 10}.

$$\frac{33}{20}$$

Factor

$$\frac{3 \cdot 11}{5 \cdot 2 ^ {2}} = 1\frac{13}{20} = 1.65$$