a) 9x-3.(2x+2)=15 b) 5.(3-x)=2.(x-4)+15 c) 4.(x+10)-2.(x-5)=0 d) 3.(2x-1)= -2. (x+3) e)15+3.... Pergunta de ideia deLalarodrigues03

April 2020 1 64 Report

a) 9x-3.(2x+2)=15

b) 5.(3-x)=2.(x-4)+15

c) 4.(x+10)-2.(x-5)=0

d) 3.(2x-1)= -2. (x+3)

e)15+3. (x+2) = -7x +2 . (x+1)

Me ajudeeem!! Obrigado

a) 9x - 6x + 6 = 15

3x = 15 - 6

3x = 9

x = 9/3

x = 3

b) 15 - 5x = 2x - 8 + 15

5x - 2x = - 8 + 15 - 15

3x = - 8

x = - 8/3

x = - 2,6

c) 4x + 40 - 2x + 10 = 0

4x - 2x = 0 - 40 - 10

2x = - 50

x = - 50/2

x = - 25

d) 6x - 3 = - 2x - 6

6x + 2x = - 6 + 3

4x = - 3

x = - 3/4

x = - 0,75

e) 15 + 3x + 6 = -7x + 2x + 2

3x + 7x -2x = 2 - 15 - 6

8x = - 19

x = - 19/8

x = - 2,375