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lizapysanova111
@lizapysanova111
July 2022
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1)X=12=7:10
2)2/х=8/5
3)4,8:5,1=х:34
4)х/117=5/72
это все пропорции
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ФАИНА1984
Verified answer
1)X/12=7:10
10*х=12*10
10х=84
х=84:10
х=8.4
8.4/10=7:10
0.7=0.7 ВЕРНО
2)2/х=8/5
х*8=2*5
8х=10
х=10:8
х=1.25
2/1.25=8/5
1.6=1.6 ВЕРНО
3)4,8:5,1=х:34
х*5.1=34*4.8
5.1х=163.2
х=163.2:5.1
х=32
4.8:5.1=32:34
32/34=32/34 ВЕРНО
4)х/117=5/72
х*72=5*117
72х=585
х=585:72
х=8.125
8.125/117=5/72
5/72=5/72 ВЕРНО
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Verified answer
1)X/12=7:1010*х=12*10
10х=84
х=84:10
х=8.4
8.4/10=7:10
0.7=0.7 ВЕРНО
2)2/х=8/5
х*8=2*5
8х=10
х=10:8
х=1.25
2/1.25=8/5
1.6=1.6 ВЕРНО
3)4,8:5,1=х:34
х*5.1=34*4.8
5.1х=163.2
х=163.2:5.1
х=32
4.8:5.1=32:34
32/34=32/34 ВЕРНО
4)х/117=5/72
х*72=5*117
72х=585
х=585:72
х=8.125
8.125/117=5/72
5/72=5/72 ВЕРНО