Question

Rozwiąż:

1) 6*(5x-4)=4*(3x+5)

2) 7x-8=15x+9

3) 4a-7=12a-10

4) 3*(2x-4)=4*(5x+2)

5)20x-16=10x+14

Answer 1

1)

6*(5x-4)=4*(3x+5)

30x-24=12x+20

18x=44

x=22/9

2)

7x-8=15x+9

8x=-17

x=-17/8

3)

4a-7=12a-10

8a=3

a=3/8

4)

3*(2x-4)=4*(5x+2)

6x-12=20x+8

14x=-20

x=-10/7

5)

20x-16=10x+14

10x=30

x=3

Answer 2

1) 6*(5x-4)=4*(3x+5) 
30x - 24 = 12x + 20 

30 x - 12 x = 20 +24

18 x = 44

x = 44 / 18

x = 22 / 9 

x =

2) 7x-8=15x+9

7 x - 15x = 9 + 8

-8x = 17

- x = 17 / 8

x = - 17 / 8

x =

3) 4a-7=12a-10

4a - 12a = - 10 + 7 

- 8 a = - 3 

a =

4) 3*(2x-4)=4*(5x+2)

6 x - 12 = 20 x + 8 

6x - 20 x = 8 + 12 

- 14 x = 20 

-x = 20 / 14 

x =  - 10 / 7 

x = - 1 i 3/7

5)20x-16=10x+14

20 x - 10 x = 14 + 16 

10 x = 30 

x = 30 / 10 

x = 3