Question

afla termenul necunoscut:a)7/5-(8/5-x)=2/5

Answer 1

7/5-(8/5-x)=2/5
7/5 - 8/5 + x = 2/5
-1/5 + x = 2/5
x = 2/5 + 1/5
x = 3/5 

Answer 2

$\frac{7}{5} -( \frac{8}{5} -x)= \frac{2}{5} \\ \\ \frac{8}{5} -x= \frac{7}{5} - \frac{2}{5} \\ \\ \frac{8}{5} -x= \frac{5}{5} \\ \\ x= \frac{8}{5} -\frac{5}{5} \\ \\ x= \frac{3}{5}$