a) 2(x-1/2)-x+3 = 3 b) 0,5(2-4x)=3-x c)12y - (y+5)=10y - 1 d) 2(u-5)+15=3(u-4)+10 proszę o pomoc mam ja jutro :)

a) 2x- 1-x+ 3 = 3 2x-x= 3-3+1 ×=1 b) 1-2x=3-x -2x+x = 3-1 -1x=2 x= -2 c)12y -y -5= 10y-1 12y-y-10y=-1 +5 y= 4 d)2u-10+15= 3u-12+10 2u- 3u= -12+10+10-15 -u= -7 u=7