200. Решите уравнение: 1) 2(11х - 5) – 17x = 55; 2) 5(8x + 3) - 12 = 83; 3) 7(2x + 9) + 3x = 114; 4) 3(4x + 13) - 25 = 74.

1) 2(11х-5)-17х=55
22х-10-17х=55
22х-17х=55+10
5х=65
х=65:5
х=13

2) 5(8х+3)-12=83
40х+15-12=83
40х=83-15+12
40х=80
х=80:40
х=2

3) 7(2х+9)+3х=114
14х+63+3х=114
14х+3х=114-63
17х=51
х=51:17
х=3

4) 3(4х+13)-25=74
12х+39-25=74
12х=74-39+25
12х=60
х=60:12
х=5