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Автор - котейка615

Решить уравнения:
1) 10• (1530 – х)= 5300
2) 3х – 212 = 403
3) 12 ( х+17) = 804
4) (х – 84) • 11= 176
5) 26у + 8935=14213
6) 138х – 100х –6861=1240
7) 7509-(212у+88у)=105
8) 3(4-5х)= - 26+4х
9) 5(13-2х)= - 19- 3х
10)1,2 •(0,5х-2)-0,6х= 3/4 х +1,83

Ответ

Автор - Лытя
1)1530-х=5300:10
1530-х=530
х=1530-530
х=1000

2)х:6=589-434
х:6=155
х=155*6
х=930

3)3х=403+212
3х=642
х=642:3
х=214

4)х+17=804:12
х+17=67
х=67-17
х=50

5)х-84=176:11
х-84=16
х=16+84
х=100

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