Срочно!!!!!!!! хоть 2-3 примера пропорции
1. 105/70=x/4
2. 1/6 : x = 2 : 3 3/7
3. x+2/2,4 = 8,5/6,8
4. 1 2/7 : 5 1/7 = 2/3 : x
5. 2x - 0,5/4,5 =84/108
6. 4 : 2/9x = 5 1/7
1. 105/70=x/4
2. 1/6 : x = 2 : 3 3/7
3. x+2/2,4 = 8,5/6,8
4. 1 2/7 : 5 1/7 = 2/3 : x
5. 2x - 0,5/4,5 =84/108
6. 4 : 2/9x = 5 1/7
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70х=105*4
70х=420
х=420:70
х=6
2)1/6:х=2:24/7
2х=1/6*24/7
2х=4/7
х=4/7:2
х=4/7*1/2
х=2/7
4)9/7:36/7=2/3:х
9/7х=36/7*2/3
9/7х=24/7
х=24/7:9/7
х=24/7*7/9
х=24/9
х=8/3
х=2 2/3
6)4:2/9х=36/7
2/9х=4:36/7
2/9х=4*7/36
2/9х=7/9
х=7/9:2/9
х=7/9*9/2
х=7/2
х=3,5