Решите уравнение 8(x-14)=56 (46-x)*19=418 9(143-13x)=234 17(5x-16)=238

Question

Решите уравнение 8(x-14)=56
(46-x)*19=418
9(143-13x)=234
17(5x-16)=238

Answer 1

1)8х-112=56
8х=56+112
8х=168
х=21
2)874-19х=418
-19х=418-874
-19х=-456
х=24
3)1287-117х=234
-117х=234-1287
-117х=-1053
х=9
4)85х-272=238
85х=238+272
85х=510
х=6

Comments

точно правильно?

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да