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a fost răspuns

[(72:a-3x4)x36-19x5]-(124x6-301x2)=195calculati a=?

Răspuns :

Deva
[(72:a-12)x36-95]-(744-602)=195
[(72:a-12)36-95]-142=195
(72:a-12)36-95=337
(72:a-12)36=432
72:a-12=12
72:a=24
a=72:24=3