Решите уравнения:
1)2950 : х - 17 = 33
2)y : 12 + 15 = 21
3)2320 - x : 4 = 1990
4)1960 - 200 : x = 1910
1)2950 : х - 17 = 33
2)y : 12 + 15 = 21
3)2320 - x : 4 = 1990
4)1960 - 200 : x = 1910
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2950:х=33+17
2950:х=50
х=59
2950:59-17=33
33=33
2) у:12+15=21
у:12=21-15
у:12=6
у=12*6
у=72
72:12+15=21
21=21
3) 2320-х:4=1990
х:4=2320-1990
х:4=330
х=330*4
х=1320
2320-1320:4=1990
1990=1990
4) 1960-200:х=1910
200:х=1960-1910
200:х=50
х=200:50
х=4
1960-200:4=1910
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