Плиииз!!!!!!!!!!!!!!!!!

Question

Плиииз!!!!!!!!!!!!!!!!!

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Answer 1

15/7 * 28/9=15*28/7*9=420/63=20/3= 6 2/3
3/7*7/9=3/9=1/3
5/8* 1 13/15* 2 2/7=5/8*28/15*16/7= 5*28*16 / 8*15*7=1*4*2/1*3*1=8/3=2 2/3
1 5/7: 1 1/7= 12/7: 8/7=12/7*7/8=12/8=3/2=1 1/2
3 1/5:2 2/15= 16/5: 32/15=16/5* 15/32=3/2 = 1 1/2

Answer 2

T+2 11/52=7 5/39
t=7 5/39-2 11/52=7 20/156-2 33/156
t=4 143/156=4 11/12
4 11/12+2 11/52=4 143/156+2 33/156=6 176/156=7 20/156=7 5/39

а)2 1/7*3 1/9=60/9=6 2/3
б)3/7*7/9=1/3
в)5/8*1 13/15*2 2/7=5/8*28/15*16/7=8/3=2 2/3

а)1 5/7:1 1/7=12/7:8/7=3/2=1 1/2
б)3 1/5:2 2/15=16/5:32/15=3/2=1 1/2
в)виден не весь пример