Question

помогите решить уравнения N12

Answer 1

160+2400:(75-x)=200
2400:(75-X)=200-160
2400:(75-x)=40
75-x=2400:40
75-x=60
x=75-60
x=15
160+2400:(75-15)=160+2400:60=160+40=200

Answer 2

y*56=64+45856

Answer 3

y*56=45920

Answer 4

y=820

Answer 5

26176:(820*56-45856)=26176:(45920-45856)=26176:64=409

Answer 6

160+2400 : (75-х)=200. 26176:(у*56-45856)=409 2560 : (75-х)=200. у*56-45856=26176:409 75-х=2560:200. у*56-45856=64 75-х=12,8. у*56=45856+64 х=12,8+75. у*56=45920 х=87,8. у=45920:56 у=820

Answer 7

первый у пользователя Masha 2006778899