Пошаговое объяснение:
2 : 0,2 = 20 : 2 = 10
Или:
2 : 2/10 = 2 * 10/2 = 20/2 = 10
9 : 0,3 = 90 : 3 = 30
Или:
9 : 3/10 = 9 * 10/3 = 90/3 = 30
2 : 0,5 = 20 : 5 = 4
Или:
2 : 5/10 = 2 * 10/5 = 20/5 = 4
24 : 0,06 = 2400 : 6 = 400
Или:
24 : 6/100 = 24 * 100/6 = 2400/6 = 400
2,5 : 0,05 = 250 : 5 = 50
Или:
2. 5/10 : 5/100 = 25/10 * 100/5 = 5/1 * 10/1 = 50/1 = 50
1,6 : 0,04 = 160 : 4 = 40
Или:
1. 6/10 : 4/100 = 16/10 : 1/25 = 16/10 * 25/1 = 16/2 * 5/1 = 80/2 = 40
0,7 : 0,14 = 70 : 14 = 5
Или:
7/10 : 14/100 = 7/10 * 100/14 = 1/1 * 10/2 = 10/2 = 5
0,6 : 0,04 = 60 : 4 = 15
Или:
6/10 : 4/100 = 6/10 * 100/4 = 600/40 = 15
Пошаговое объяснение:
1) 1,26×10/27:0,84-5/6= 126/100*10/27:84/100-5/6=126/10*1/27*100/84-5/6=126/1*1/27*10/84-5/6=126/27*10/84-5/6=5/9-5/6=(5*2-5*3)/18=-5/18
2) 64/155×4,65:0,18+1 1/3=12
64/155*465/100=64/1*3/100=32/1*3/50=16/1*3/25=48/25
48/25:18/100=48/25*100/18=48/1*4/18=48/1*2/9=96/9
96/9+1 1/3=96/9+(1*3+1)/3=(96+4*3)/9=108/9=12
3) 5 1/21×0,9:6 2/35-0,5=-1/20
(5*21+1)/21*9/10=106/21*9/10=106/7*3/10=318/70
318/70:6 2/35=318/70:212/35=318/70*35/212=3/4
3/4-0,5=3/4-8/10=(3*5)/20-(8*2)/20=-1/20
4) 7,5×2 31/40:16/65+0,25=21709/256 или 84 205/256
75/10*(2*40+31)/40=75/10*111/40=333/16
333/16:16/65=333/16*65/16=21645/256
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