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-3x+2x+x=-6-4
x=-10
2. x-3x=1=1/5 |x20
.......
4
(x-3x) /4 x 20 = 1/5 x 20
5(x-3x)=4
5x-15x =4
-10x=4
x=4 : -10
x= -4/10 = -2/5
3. 1/3x=2
x= 2:1/3
x= 2/1 x 3/1
x=6
t kresla / oznacza ułamek