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-2/3x=4
x=-6
1 - sześć siódmych x = cztery siódme
-6/7x=4/7-1
-6/7x=-3/7
x=1/2
6( jedna czwarta x - 2 ) = 18
6/4x-12=18
3/2x=30
x=20
x=1/3 - 2(1-3)
x= -(1/3)
b) 6-x=2(3/4)
-x=2(3/4)-6
-x=-(13/4)
x= 13/4
x=3 1/4 - trzy i jedna czwarta
c) x+2,8=4,2
x= 1,4
d)x+3(1/3)=6
x+1=6
x=5
e)4,5+x=7,2
x= 2,7
x=1/3-2 1/3
x=-2
b)6-x=2 3/4
6-2 3/4=x
4 3/4=x
c)x+2,8=4,2
x=4,2-2,8
x=1,6
d)x+3 1/3=6
x=6-3 1/3
x= 3 1/3
e)4,5+x=7,2
x=7,2-4,5
x=2,7