Question

1)2(11х-5)-17х=55 2)5(8х+3)-12=83 3)7(2х+9)+3х=114 4)3(4х+13)=74 как решить эти уравнения?

Answer 1

1) 22x-10-17x=55
5x-10=55
5x=55+10
5x=65
x=13
2)40x+15-12=83
40x+3=83
40x=83-3
40x=80
x=2
3)14x+63+3x=114
17x=114-63
17x=51
x=3
4)3(4x-13)-25=74
3(4x-13)=99
4x-13=99/3
4x-13=33
4x=33-13
4x=20
x=5

Answer 2

2(11х-5)-17х=55  

22х-10-17х=55

22х-17х=55+10

5х=65

х=65:5

х=13

5(8х+3)-12=83

5(8х+3)=83+12

5(8х+3)=95

8х+3=95:5

8х+3=19

8х=19-3

8х=16

х=16:8

х=2

7(2х+9)+3х=114

14х+63+3х=114

14х+3х=114-63

17х=51

х=51:17

х=3

3(4х+13)-25=74

3(4х+13)=74+25

3(4х+13)=99

4х+13=99:3

4х+13=33

4х=33-13

4х=20

х=20:4

х=5