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a fost răspuns

(x:3-3)×9=306


909:9-(9×9:x-9)=101


35×5-54:x×4=139.

Răspuns :

AnamariaMarocico2006
(x:3-3)×9=306
x:3-3=306:9
x:3-3=34
x:3=34+3
x:3=37
x=37×3
x=111

909:9-(9×9:x-9)=101
101-(81:x-9)=101
81:x-9=101-101
81:x-9=0
81:x=9+0
81:x=9
x=81:9
x=9

35×5-54:x×4=139
175-54:x×4=139
54:x×4=175-139
54:x×4= 36
54:x=36:4
54:x=9
x=54:9
x=6

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