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aflati x din egalitatea : 8:{[(9×x+42):x]×4-52}=1

Răspuns :

8÷{[(9×x+42)÷x]×4-52}=1
[(9×x+42)÷x]×4-52=8÷1
[(9×x+42)÷x]×4=8+52
(9×x+42)÷x=60÷4
(9×x+42)÷×=10
(9×x÷x)+(42÷x)=15
9+(42÷x)=15
42÷x=15-9=6
x=42÷6
×=7
Sper ca te-am ajutat!