Question

1) 2x+6=x+18 2) 5x-3=2x+9 3) 3(2x-3)+2(x + 1) = 3x + 18 4) 2x+3 (x-5) = 4x+9 5) 2(x+1)-3(2x-5)=6x-3 6) 3x-5=x-2​

Answer 1

Resposta:

1) 2x + 6 = x + 18

2x - x = 18 - 6

x = 12

2) 5x - 3 = 2x + 9

5x - 2x = 9 + 3

3x = 12

x = 12/3

x = 4

3) 3(2x - 3 ) + 2 ( x + 1 ) = 3x + 18

6x - 9 + 2x + 2 = 3x + 18

6x + 2x - 3x = 18 + 9 - 2

5x = 25

x = 25/5

x = 5

4) 2x + 3 ( x - 5 ) = 4x + 9

2x + 3x - 15 = 4x + 9

2x + 3x - 4x = 9 + 15

x = 24

5) 2(x+1) - 3(2x-5) = 6x - 3

2x + 2 - 6x + 15 = 6x - 3

2x - 6x - 6x = -3 -2 -15

-10x = -20 .(-1 )

10x = 20

x = 20/10

x= 2

6) 3x - 5 = x - 2

3x - x = -2 + 5

2x = 3

x = 3/2