матиматика 200 отинем

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

1)

22x - 10 - 17x = 55

5x - 10 = 55

5x = 55 + 10

5x = 65

x = 65 : 5

x = 13

2)

5(8x+3) = 83+12

40x + 15 = 95

40x = 95 - 15

40x = 80

x = 80 : 40

x = 2

3)

14x + 63 + 3x = 114

17x + 63 = 114

17x = 114 - 63

17x = 51

x = 51 : 17

x = 3

4)

12x + 39 - 25 = 74

12x + 14 = 74

12x = 74 - 14

12x = 60

x = 60 : 12

x = 5