👤
a fost răspuns

Determinati nr natural x din: 23-2·[15-(74-2·x):4+3]=9. DAU COROANA!

Răspuns :

23-2×[15-(74-2x)÷4+3]=9
23-2×[15-2(37-x)÷4+3]=9
23-2×[15-(37-x)÷2+3]=9
23-2×(15-37/2-x/2+3)=9
23-2×(30-37-x+6)/2=9
23-2×(-1-x)/2=9
23+1-x=9
-x=9-23-1
-x=-15
x=15


coroana????

Alte intrebari