Question

encontre a solução para cada equação
A) 4 (x-2)-2 (-x+3)=1
B) 8-7 (-x+3)=15x-5
C) 1+2 (3x-4)=3 (5-x)-4
D) 7-2 (-x-3)=8-5 (x-1)

Answer 1

A)
4.(x - 2) - 2.(-x + 3) = 1

4x - 8 + 2x - 6 = 1

6x - 14 = 1

6x = 1 + 14

6x = 15

x = 15/6  simplificando:

x = 5/2

B)

8 - 7(-x + 3) = 15x - 5

8 + 7x -21 = 15x - 5

7x - 15x = - 5 - 8 + 21

-8x = 8

x = -8/8

x = -1

C)
1 + 2(3x - 4) = 3(5 - x) - 4

1 +6x - 8 = 15 - 3x - 4

6x + 3x = 15 - 4 - 1 +8

9x = 18

x = 18/9

x = 2

D)
7 - 2(-x -3) = 8 - 5(x - 1)

7 +2x +6 = 8 - 5x +5

2x + 5x = 8 + 5 - 7 - 6

7x = 0

x = 0/7

x = 0