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Teodora1900
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calculati : 1000-[1000-(25x9-216:b) -699]=900
Repede va rog!!

Răspuns :

Hati
1000-[1000-(25×9-216:b)-699]=900
1000-(25×9-216:b)-699=100
1000-(25×9-216:b)=799
25×9-216:b=201
225-216:b=201
216:b=24
b=9

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