Question

1-.7x+8=3x-20
2-.12-5x=3x-20
3-.4-3x+8-7x=3-4x-9
4-.7(x+2)-8(x+3)=3-4(x-1)-2
5-.6(2x+1)-3(4x+1)+x=2 ayuda plots

Answer 1

1- R: x= - 7

7x - 3x = - 20 - 8

7 - 3 = 4

4x =-28

divides la ecuación en 4:

X = - 7

2 - R: X=4

-5x - 3x = - 20 - 12

- 8x = - 32

divides en 8

x = 4

3- R: X=18

12- 10x = - 6 -9x

-10x + 9x = -6 - 12

- X = - 18

x = 18

4- R: X =5

7x+ 14 - 8x - 24 = 3 - 4x + 4 - 2

-x - 10 =5 - 4x

-x + 4x =5 +10

4 - x = 3

3x = 15

x = 5

5- R: X= -1

12x + 6-12x -3 + x =2

6 - 3 + x = 2

3+ x = 2

x= 2-3

x = - 1

espero te sirva como tal