Question

1) 4(x-1)-2(3x+4)=6

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

3) a-3a+5a=12

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

5) 10-4x=9-2x

6) 2(7x+2)+12(x+1)=2

Answer 1

Resposta:

1) 4(x-1)-2(3x+4)=6

   4x - 4 - 6x - 8 = 6

   4x - 6x = 6 + 8 + 4

    2x = 18

    x = 18/2

    x = 9

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

    6x - 15 = 9 - 2x

    6x + 2x = 9 + 15

     8x = 25

     x = 25 / 8

     x = 3,125

3) a-3a+5a=12

    a + 2a = 12

     3a = 12

      a = 12/3

      a = 4

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

     8x - 12 = 5x + 15

     8x - 5x = 15 + 12

     3x = 27

     x = 27 / 3

     x = 9

5) 10-4x=9-2x

    2x - 4x = 9 - 10

     2x = 1

     x = 1 / 2

     x = 0,5

6) 2(7x+2)+12(x+1)=2