Question

a- 7(x-5)=3(x+1)

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

c- 2(x+1)-(x-1)=0

d- 5(x+1)-3(x+2)=0

 

 

Answer 1

7(x-5)=3(x+1)
7x - 35 = 3x + 3
4x = 38
x = 19/2
-------------------
3(x-2)=4(-x+3)
3x - 6 = -4x + 12
7x = 12 + 6
7x = 18
x = 18/7
----------------
2(x+1)-(x-1)=0
2x + 2 - x + 1 = 0
x = -3
-------------------
5(x+1)-3(x+2)=0
5x + 5 - 3x - 6 = 0
2x = +1
x = +1/2

Answer 2

a) 7(x-5)=3(x+1)
7x - 35 = 3x + 3
7x - 3x = 3 + 35
4x = 38
x = 38/4
x = 9,5

b) 3(x-2)=4(-x+3)
3x - 6 = -4x + 12
3x + 4x = 12 + 6
7x = 18
x = 18/7
x = 2.57

c) 2(x+1)-(x-1)=0
2x + 2 - x + 1 = 0
2x - x = - 1 - 2
x = -3

d) 5(x+1)-3(x+2)=0
5x + 5 - 3x - 6 = 0
5x - 3x = + 6 - 5
2x = 1
x = 1/2
x = 0,5

Bons estudos!