Question

Помогите пожалуйста решит срочно

Answer 1

-3х+9=0

-3х=-9/:3

х=3

-5х+6=0

-5х=-6/:5

х=-1,2

5х-3=-10

5х=-7/:5

х=-1,4

х+9=-9х

10х=-9/:10

х=-0,9

3х-8=-х

2х=8/:2

х=4

-7=5(х+5)

-7=5х+25

-5х=32/:-5

х=6,4

2(7+9х)=-6х+2

14+18х=-6х+2

24х=-12/:24

х=-0,5

Answer 2

1) -3х + 9 = 0    -3х = -9  х = -9/-3  х= 3

2) -5х + 6 = 0  -5х = -6  х = -6/-5 х= -1 1/5

3) 5х - 3 = -10х   5х + 10х = 3   15х = 3  х = 3/15 = 1/5

4) х + 9 = -9х   х  + 9х = -9  10х = -9  х = - 9/10

5) 3х - 8 = -х   3х + х = 8  4х = 8  х = 8/4  х = 2

6) -7 = 5(х+5)  -7 = 5х + 25  -5х = 25 + 7  -5х = 32  х = 32/-5  х = -6 2/5

7) 2(7 + 9х) = -6х + 2   14 + 18х = -6х + 2   18х + 6х = 2 - 14   24х = -12   х = - 12/24 = - 1/2