2x-x=1+3
x=4
x-3x= -5+2
-2x=-3
x= -3/-2
x=1,5
1/2x - 2/3x= 3+1
x((1/2)×3 - (2/3)×2) = 4
3/6x - 4/6x = 4
-1/6x=4
x=4/(-1/6)
0,5x-0,1x = -3/4 - 2/5
0,4x = -0,75 - 0,4
0,4x=0,35
x=0,35/0,4
x=0,875
3(x-1) +2(x+4) =5
3x - 3 + 2x + 6 =6
3x + 2x = 6+3-6
5x= 3
x=3/5