1 тыс= 1000 1 сот=100
1) 1000-300 = 700 = 7 сот.
2) 900:3 = 300 = 3 сот.
3) 100*7 = 700 = 7 сот.
(768-c):48=288:48
768-c=288
c=768-288
c=480
185050:(36000-х)=50
36000-х= 185050:50
36000-х =3701
х=36000-3701
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ответ:32299
1)-1/8. 2)1/2. 3)-7/10. 4)-4/7
2-1 1/15= 14/15
14/15 : 4/9 = 126/135 : 60/135 = 2,1
2 4/15 - 2,1 = 2 40/150 - 2 10/150 = 30/150 =1/5
1/5 + 2/3 = 3/15 + 10/15 = 13/15