Question

Resolva as equações:

a) 4x-1=3(x-1)
b) 3(x-2)=2x-4
c) 2(x-1)=3x+4
d) 3(x-1)-7=15
e) 7(x-4)=2x-3
f) 3(x-2)=4(3-x)
g) 3(3x-1)=2(3x+2)
h) 7(x-2)=5(x+3)
i) 3(2x-1)=-2(x+3)
j) 5x-3(x+2)=15
k) 2x+3x+9=8(6-x)
l) 4(x+10)-2(x-5)=0
m) 3(2x+3)-4(x-1)=3
n) 7(x-1)-2(x-5)=x-5
o) 2(3-x)=3(x-4)+15
p) 3(5-x)-3(1-2x)=42
q) (4x+6)-2x=(x-6)+10+14
r) (x-3)-(x+2)+2(x-1)-5=0
s) 3x-2(4x-3)+2-3(x-1)
t) 3(x-1)-(x-3)+5(x-2)=18
u) 5(x-3)-4(x+2)=2+3(1-2x)​

Answer 1

Resposta:

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

4x - 1 =3x-3

4x -3x = -3x+1

x=2

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

3x-6=2x-4

3x-2x= -4+6

x=2

C = 2(x-1)-7= 15

2x-2=3x+4

2x-3x=4+2

x=-6

D= 3(x-1)-7=15

3x-3-7=15

3x-10=15

3x=15+10

3x=25

x= 25

3

E= 7( x-4)= 2x-3

7x-28=2x-3

7x-2x= -3+28

5x= 25

x= 5

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

3x -6= 12-4x

3x+4x = 12+6

7x= 18

x= 18

7