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Rozwiąz równania:

a)x + 2:9+x-1:3=1

b)2x+3:5=2-x:3+x

c)3x-5:2-5x-1:10=0

d)x/2=2/5(4-x)-4

x/2 i 2/5 - to ułamek zwykły

e)2x-1:5-x-2:2=0,7x

f)2x-3x+5:4=-1/4x-1


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