Question

1)X+9=18

2)X-1=-8

3)12×-10=5×+11

4)14-3x=2x+29

5)2.(7x+2)+12.(x+1)=2

6)-2.(x-3)=18

7)3(x-1)=6

8)3(2x-5)=9-2x

Alguém me ajudaaaa​

Answer 1

Resposta:

1) x = 18 - 9

x = 9

2) x = -8 + 1

x = -7

3) 12x - 5x = 11 + 10

7x = 21

x = 21/7

x = 3

4) 14 - 3x = 2x + 29

-3 - 2x = 29 - 14

-5x = 15

x = 15/-5

x = -3

5) 2(7x+ 2)+ 12 (x + 1) = 2

14x + 4 + 12x + 12 =2

14x + 12 x = 2 - 4 - 12

26x = -14

x = -14/26

simplificando: -7/13

6) - 2(x - 3) = 18

-6x - 6 = 18

-6x = 18 + 6

x = 24/-6

x = - 4

7) 3 (x-1) = 6

3x - 3 = 6

3x = 6 + 3

x = 9/3

x = 3