X - 3/10 = 5/6 - 7/12
x-3/10 = 10/12-7/12
x-3/10 = 3/12
x-18/60 = 15/60
x = 18/60+15/60
x = 33/60
x = 11/30
Найдите значение выражений: 1) (0,24-0,08*2,3)/0,4=? 2) 4,8/(0,65+0,15)-9,8=? 3) (7,2-4,4)*0,5+3,9-0,4=? 4) 0,42/(1,75-3,5*0,1)/
elen4ik [38]
1) (0,24-0,08*2,3)/0,4=
(0,24-0,184):0,4=0,056:0,4=0,14;///
2) 4,8/(0,65+0,15)-9,8=
4,8:0,8-9,8=6-9,8=-3,8;//////
3) (7,2-4,4)*0,5+3,9-0,4=
2,8*0,5+3,5=1,4+3,5=4,9;/////
4) 0,42/(1,75-3,5*0,1)/0,05=
0,42:1,4:0,05=0,3:0,05=6
9/18 = 1/2
8/24 < 6/15
2/3 > 5/9