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x+(4/9 - 1/9) = 1
am nevoie urgent


Răspuns :

daca / inseamna linia de fractie atunci:
x+3/9=1
x+3=1•9
x+3=9
x=9-3
x=6
×+(4/9-1/9) =1
×+3/9=1
×= 1- 3/9
×=6/9
Verificare:
6/9+(4/9-1/9) =1