Question

Proszę!!!

1. 5n+12=9n-16

2. 5x-x+6=-4+2x-8x

3. 3(x+2)=23

4. 2(3a+7)+a=70

5. 5(w+3)-63(w+1)=10

6. 6(x-7)-2(x-4)=14

7. 4x-3(x-2)=41

8. 54=3(4x-2)

9. 4-(2x+3)=7x-(2x+13)

10. 4(x+3)=2(x-6)

11. -4(3t-20)=-1-11t

12. -3(2m+5)+7m=23-37

13. 2/3+1/2x=5/6

14. 5n/6+1/4=3/8

15. x/2=7-2x/3

16. 3/10=x+3/2+x+4/5

17. 2m-3/4-1=m-5/3

18. x-2/6-x-1/4=-2/3

19. x+3/5=4-x/2

20. -2(x-3)/2=9-15x/3

Proszę o pomoc!! Z góry dziękuję!

Answer 1

1.

5n+12=9n-16

-4n=-28

n=7

2.

5x-x+6=-4+2x-8x

10x=-10

x=-1

3.

3(x+2)=23

3x+6=23

3x=17

x=5 i 2/3

4.

2(3a+7)+a=70

6a+14+a=70

7a=56

a=8

5.

5(w+3)-63(w+1)=10

5w+15-63w-63=10

-58w=58

w=-1

6.

6(x-7)-2(x-4)=14

6x-42-2x+8=14

4x=48

x=12

7.

4x-3(x-2)=41

4x-3x+6=41

x=35

8.

54=3(4x-2)

54=12x-6

60=12x

x=5

9.

4-(2x+3)=7x-(2x+13)

4-2x-3=7x-2x-13

-7x=-14

x=2

10.

4(x+3)=2(x-6)

4x+12=2x-12

2x=-24

x=-12

11.

-4(3t-20)=-1-11t

-12t+80=-1-11t

-t=-81

t=81

12.

-3(2m+5)+7m=23-37

-6m-15+7m=23-37

m=1

13.

2/3+1/2x=5/6

1/2x=1/6

x=2/6

x=1/3

14.

5n/6+1/4=3/8 /*24

20n+6=9

20n=3

n=3/20

15.

x/2=7-2x/3  /*6

3x=42-4x

7x=42

x=6

16.

3/10=x+3/2+x+4/5 /*10

3=10x+15+10x+8

-20=20x

x=-1

17.

2m-3/4-1=m-5/3 /*12

24m-9-12=12m-20

12m=1

m=1/12

18.

x-2/6-x-1/4=-2/3   /*12

12x-4-12x-3=-8

0x=-1

19.

x+3/5=4-x/2  /*10

10x+6=40-5x

15x=34

x=2 i 4/15

20.

-2(x-3)/2=9-15x/3

-2x+6/2=9-15x/3  /*6

-6x+18=18-30x

24x=0

x=0