1) 2(11х - 5) - 17х= 55
22х - 10 - 17х = 55
5х - 10 = 55
5х = 55 + 10
5х = 65
х = 65 / 5
х = 13
2) 5(8х + 3) - 12 = 83
40х +15 - 12 = 83
40х + 3 = 83
40х = 83 - 3
40х = 80
х = 80 / 40
х = 2
3) 7(2х + 9) + 3х = 114
14х + 63 + 3х = 114
17 х + 63 = 114
17х = 114 - 63
17х = 51
х = 51 / 17
х = 3
4) 3(4х + 13) - 25 = 74
12х +39 - 25 = 74
12х + 14 = 74
12х = 74 - 14
12х = 60
х = 60 / 12
х = 5