1)15х=0.15
х=0.15:15
х=0.01
ПРОВЕРКА:15*0.01=0.15, 0.15=0.15.
2)3.08:у=4
у=3.08:4
у=0.77
ПРОВЕРКА:3.08:0.77=4, 4=4.
3)3а+8а=1.87
11а=1.87
а=1.87:11
а=0.17
ПРОВЕРКА:3*0.17+8*0.17=1.87, 0.51+1.36=1.87, 1.87=1.87.
4)7z-3z=5.12
4z=5.12
z=5.12:4
z=1.28.
ПРОВЕРКА:7*1.28-3*1.28=5.12, 8.96-3.84=5.12, 5.12=5.12.
1)
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(это проверка)
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2)
3)
4)
1)15х=0.15
х=0.15:15
х=0.01
ПРОВЕРКА:15*0.01=0.15, 0.15=0.15.
2)3.08:у=4
у=3.08:4
у=0.77
ПРОВЕРКА:3.08:0.77=4, 4=4.
3)3а+8а=1.87
11а=1.87
а=1.87:11
а=0.17
ПРОВЕРКА:3*0.17+8*0.17=1.87, 0.51+1.36=1.87, 1.87=1.87.
4)7z-3z=5.12
4z=5.12
z=5.12:4
z=1.28.
ПРОВЕРКА:7*1.28-3*1.28=5.12, 8.96-3.84=5.12, 5.12=5.12.
1)![15x=0,15](/tpl/images/0044/4649/fc7c2.png)
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2)![3,08:y=4](/tpl/images/0044/4649/8c8fe.png)
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3)![3a+8a=1,87](/tpl/images/0044/4649/bda3a.png)
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4)![7z-3z=5,12](/tpl/images/0044/4649/1551f.png)
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