Question

теңдеуді шеш
1.2(11х-5)-17х=55
2.5(8х+3)-12=83
3.7(2х+9)+3х=114

Answer 1

Ответ:

1)2(11х-5)-17х=55

22x-10-17x=55

22x-17x=55+10

5x=65

x=65:5

x=13

2)5(8х+3)-12=83

40x+15-12=83

40x=83+12-15

40x=80

x=80:40

x=2

3)7(2х+9)+3х=114

14x+63+3x=114

14x+3x=114-63

17x=51

x=51:17

x=3