Решить уравнения , . 1) -4(-7+6х)=-9х-5. 2) -6(9-5х)=9х+9. 3) -3(1+4х)=-4х-5. 4) -6(-5-7х)=-8х+2. 5) 9х+2(2х+1)=1. 6) 4+3(10х+7) =-5. 7) 4+5(-3х+7)=-9

1) -4(-7+6х)=-9х-5.
28-24х=-9х-5
9х-24х=-5-28
-15х=-33
х=-33:(-15)
х=2.2

2) -6(9-5х)=9х+9.
-54+30х=9х+9
30х-9х=9+54
21х=63
х=63:21
х=3

3) -3(1+4х)=-4х-5.
-3-12х=-4х-5
-12х+4х=3-5
8х=-2
х=-2:8
х=-0.25

4) -6(-5-7х)=-8х+2.
30+42х=-8х+2
42х+8х=2-30
50х=-28
х=-28:50
х=-0.56

 5) 9х+2(2х+1)=1.
9х+4х+2=1
9х+4х=1-2
13х=-1
х=-1/13

6) 4+3(10х+7) =-5.
4+30х+21=-5
30х=-5-21-4
30х=-30
х=-30:30
х=-1

7) 4+5(-3х+7)=-9
4-15х+35=-9
-15х=-9-35-4
-15х=-48
х=-48:(-15)
х=3.2

1. 28-24x=-9x-5
-15x=33
x=-33/15
2. -54+30x=9x+9
21x=63
x=3
3. -3-12x=-4x-5
-8x=-2
x=1/4
4. 30+42x=-8x+2
50x=-28
x=-14/25
5. 9x+4x+2=1
13x=-1
x=-1/13
6. 4+30x+21=-5
30x=-30
x=-1
7. 4-15x+35=-9
15x=-22
x=-22/15