#760
1) 7/12 = 7:12
2) 17/584 = 17:584
3)11/7 = 11:7
#761
1) 5/7 = 5:7
2) 3/10 = 3:10
3) 29/5 = 29:5
#762
6 = 6/1
6 = 6/4
6 = 6/19
#763
12 = 12/1
12 = 12/5
12 = 12/23
#764
1)b/7 = 12
b = 12x7
b = 84
2)169/m = 13
m = 169:13
m = 13
3)126/8-y = 21
8-y = 126:21
8-y = 6
y = 8-6
y = 2
#765
1) x/4 = 5
x = 5x4
x = 20
2)105/y = 7
y = 105:7
y = 15
3)x+12/6 = 14
x+12 = 14x6
x+12 = 84
x = 84-12
x = 72
Всё неужели!!!
40-13-15=12 720:12=60 15X60=900 40X60=2400 аплодисменты ?
(- 2,314 + 0,25) : 0,02 + (1,6875 + 0,7125) : (-3) =
выражением:
= (-2,064) :0,02 + 2,4 : (-3) =
= - 2064/20 - 0,8=
= -103,2 - 0,8 = -104
по действиям:
1) -2,314 +0,25 = -(2,314 - 0,250) = -2,064
2) 1,6875 + 0,7125 = 2,4000 = 2,4
3) -2,064 :0,02 = - 2064/1000 * (100/2) = - 2064/20 = -1032/10 =-103,2
4) 2,4 : (-3) = -0,8
5) - 103,2 + (-0,8) = - 104
У×60=5620-4110 у×60=1510 у=1510:60 у=25,1666 проверка 25,1666×60=5620-4110 1509,9960=1510 1510=1510