Question

resolva as equações, sendo U=Q

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

Answer 1

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

B) 3.( x-2) = 2x-4
3x-6 = 2x-4
3x-2x=-4 +6
1x=2
x=2/1
x=2

C) 2.(x-1)=3x+4
2x-2 = 3x+4
2x-3x= 4 +2
-1x=6 (-1 )
1x=6
x=6/1
x= 6

D) 3.(x-1)-7=15
3x -3 -7= 15
3x=15+7+3
3x= 25

E) 7.( x-4)= 2x -3
7x - 28 =2x-3
7x-2x=-3 +28
5x= 25
x=25/5
x= 5