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a)
2t=t-7
b)
1+t=3
c)
4/5x=-3
d)
-3/4y=3
zad.2
a)
7x-2=-8/+2
7x=-6/:7
x=-6/7
b)
1/2x-3=2+3x/-1/2x-2
-5/2x=5/(:-5/2)
x=-2
zad.3
a)
x=3/*3
3x=9/+3
3x+3=12/-5x
-2x+3=12-5x/+1
-2x+4=13-5x/*2
-4x+8=26-10x
b)
x=-1/+4x
5x=-1+4x/-3
5x-3=-4+4x/+2
5x-1=-2+4x/*(-1)
-5x+1=2-4x/+4
-5x+5=6-4x