1.8 (x-14) = 56

2. (46-x) * 19=418

3.9 (143-13x) = 234

4.17 (5 х-16) = 238

1 и 2 первым способом, 3 и 4 вторым способом

1. х-14=56:8

х-14=7

х=14+7=21

2=

1)

8 (x-14) = 56

8x-112=56

8x=56+112

8x=168

x=168/8

x=21

2)

(46-x) * 19=418

874-19x=418

-19x=418-874

-19x=-456

19x=456

x=456/19

x=24

3)

9 (143-13x) = 234

1287-117x=234

-117x=234-1287

-117x=-1053

117x=1053

x=1053/117

x=9

4)

17 (5x-16) = 238

85x-272=238

85x=238+272

85x=510

x=510/85

x=6