Question

Alguém sabe me responder essas contas?


15x + 4 +8= 12x-9+15

2x +5x= 15+20

5x=4x =40

10x=8x -40

6x=30

2x -10 =5x -3+x

Se alguém souber me ajuda pfv

Answer 1

Resposta:

15x + 4 +8= 12x-9+15

15x-12x= -9+15-4-8

3x= -6

x= -6

———

3

x= -2

2x +5x= 15+20

7x=35

x= 35

———

7

x= 5

5x=4x =40

5x-4x=40

1x ou x= 40

x= 40

———

1

x= 40

10x=8x -40

10x-8x= -40

2x= -40

x= -40

———

2

x= -20

6x=30

x= 30

———

6

x= 5

2x -10 =5x -3+x

2x-5x-x= -3+10

-4x= 7

x= 7

——

-4