Question

10. Бiр айнымалысы
1. -4x =36 ;
2. 6x +2 = 50;
3. 4x + 11 = 7x-4 ;
4. -6x = -42;
5.7x+12=40;
6. 6x-11 = 4х +7;
7. 17-0,4y = 0,7у-5 ;
8.3x-4=7x +6;
1
9. 0,2-x=+ +0,8x;
10. -11 = 5x +0,2;
1
8
11.
23
69
1
12. 0,125y += 0;

Answer 1

1) -4х=36

х=36÷4

х= -9

2)6х+2=50

6х=50-2

6х=48

х=8

3)4х+11=7х-4

4х-7х= -4-11

-3х= -15

х=5

4)-6х = -42

х= 7

5)7х+12=40

7х=40-12

7х=28

х=4

6)6х-11=4х+7

6х-4х=7+11

2х=18

х=9

7)17-0,4у=0,7у-5

-0,4у-0,7у= -5-17

-1,1у= -22

у=20

3х-4=7х+6

3х-7х=6+4

-4х=10

х= -2/5