3 + 4(5х – 3) = 4х + 7 3(5х – 7) – 7(4х + 5) = х
2(6х – 5) – 7(3х – 5) = 4х – 1
–12x + 4(x – 3) = – 8x – 12
6|х| − 7 = 2|х|
8|х − 4| = 2
|5 − |х|| = 3

x = 1

x = -4

x = 2

x = 1

x1 = -7/4. x2 = 7/4

x1 = 15/4. x2 = 17/4

x1 = -8. x2 = -2. x3 = 2. x4 = 8

1) 3+5(5х-3)=4х+7

3+20х-12=4х+7

-9+20х=4х+7

20х-4х=7+9

16х=16

х=1

2) 3(5х-7)-7(4х+5)=х

15х-21-28х-35=х

-13х-56=х

-13х-х=56

-14х=56

х=-4

3) 2(6х-5)-7(3х-5)=4х-1

12х-10-21х+35=4х-1

-9х+25=4х-1

-9х-4х=-1-25

-13х=-26

х=2

4)-12х+4(х-3)=-9х-12

-12х+4х-12=9х-12

-12х+4х=9х

-8х=9х

-8х-9х=0

-17х=0

х=0

5) 6|х|-2|х|=7

4|х|=7

|х|= 7/4

х=7/4; х=-7/4

6) 8|х-4|=2

|х-4|=1/4

х-4=1/4

х-4=-1/4

х1=17/4

х2=15/4

7) |5-|х||=3

5-|х|=3

5-|х|=-3

х1=2; х2=-2; х3=8; х4=-8