selmash21 3)
36 2/3÷15=110/3×1/15=22/9
8 2/3×7=26/3×7=182/3
22/9+182/3=22/9+546/9=568/9

8 6/7÷2 4/7=62/7÷18/7=
=62/7×7/18=31/9=3 4/9
12 1/3+3 4/9=12 3/9+3 4/9=15 7/9

568/9÷15 7/9=568/9÷142/9=
=568/9×9/142=4

2 3/8÷3/4=19/8×4/3=19/6
24×7/9=56/3
19/6+56/3=19/6+112/6=131/6

157 4/5÷24=789/5×1/24=263/40=
=6 23/40
7 2/3-6 23/40=7 80/120-6 69/120=
=1 11/120

131/6÷1 11/120=131/6÷131/120=
=131/6×120/131=20

4+20=24