Question

Precisooooooo!
A) 4x-1=3.(x-1)
B) 5x-3.(x+2)=15
C) 3.(x-2)=2x-4
D) 3.(x-1)-7=15
E) 2.(x-2)=3x+4
F) 3.(x-2)=4.(3-x)
Agradeço se me ajudar!

Answer 1

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

B) 5x-3.(x+2)=15
5x -3x -6 = 15
5x -3x = 15 +6
2x= 21
x= 21/2

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

D) 3.(x-1)-7=15
3x -3 -7 = 15
3x -10 = 15
3x= 15 +10
3x= 25
x= 25/3

E) 2.(x-2)=3x+4
2x -4 = 3x +4
2x -3x = 4 +4
-x= 8 . (-1)
x= -8

F) 3.(x-2)=4.(3-x)
3x -6 = 12 -4x
3x +4x = 12 +6
7x = 18
x= 18/7

Bons estudos!