Question

2/3 ( 1, 1/2 х + 3/5 ) - 4/5 (5/12 : 1/2 ) подарю 20 балов

Answer 1

5/12:1/2=5/6
2/3*3/2*х=х
3/5*2/3=2/5
4/5*5/6=2/3
х+2/5-2/3=х-4/15