Question

Determine X
a)4x-1=3(x-1)
b)3(x-2)=2x-4
c)3(x-1)-(x-3)+5(x-2)=18
d)3(2x-1)=-2(x+3)
e)5x-3(x+2)=15
f)2x+3x+9=8(6-x)
g)4(x+10)-2(x-5)=0
h)3(2x+3)-4(x-1)=3
​

Answer 1

Resposta:

a) 4x-1= 3(x-1)

   4x-1=3x-3

   4x-3x= -3+1

     x= -2

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

   3x - 6 = 2x - 4

   3x - 2x = -4 + 6

    x = 2

c) 3(x-1)-(x-3)+5(x-2)=18

   3x-3-x+3+5x-10=18

   3x-x+5x=10+18

   7x=28

   x=28/7

   x=4

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

    6x - 3 = -2x - 6

   6x + 2x = -6 + 3

   8x = -3

    x = -3/8

e) 5x - 3(x - 2) = 15

5x - 3x - 6 = 15

2x = 15 + 6  

2x = 21

x = 10,5  

f) 2x + 3x + 9 = 48 - 8x  

2x + 3x + 8x = 48 - 9

13x = 39

x = 39/13

x= 3

g) 4(x + 10 ) - 2(x - 5 ) =0

4x + 40 - 2x + 10 = 0

2x  + 50 = 0

2x = -50

x = -50 / 2

x = -25

h) 3(2X+3)-4(X-1)=3

6x+9-4x+4=3

6x-4x=3-9-4

2x=-10

x=-5

Answer 2

a) 4x-1=3 (x-1)

4x-1=3x-3

x=-2

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

3x-6=2x-4

x=2

c) 3(x-1)-(x-3)+5 (x-2)=18

3x-3-x+3+5x-10=18

7x=28

x=4

d)to com preguiça pra responder o resto flw kk