Alguém pode me ajudar



1)Determine o valor de X nas proporções a seguir

A) 2/×+1=1/5


B)5/×-3=2/8


C)2/9=×+1/18


D)5/×=4/×-1


E)4/3×+2=1/2


F)3×/4=×+3/2


G)×+1/×+2=2/3


H)5×-3/14=1/2


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