Question

find rational number 1/2(-1/70+2/5) please full process​

Answer 1

Answer:

27/140

Step-by-step explanation:

$\frac{1}{2} ( \frac{ - 1}{70} + \frac{2}{5} ) \\ = \frac{1}{2} ( \frac{ - 1 + 28}{70} ) \\ = \frac{1}{2} \times \frac{27}{70} \\ = \frac{27}{140}$