Question

10/7 ÷ (1/7 - 1/2) + 3/4 - 1/5

Answer 1

10/7÷(1/7-1/2)+3/4-1/5=
10/7÷(-5/14)+3/4-1/5=
10/7×14/-5+3/4-1/5=
-4+3/4-1/5=
-80+15-4/20=
-69/20