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Raresescuboos20
a fost răspuns

(4,9:7+3,8)x2-78=?
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Răspuns :

PanaitRobert
(49/70 +38/10)*2-78
(49/70+266/70)*2-78
315/70*2-78
315/35-78
63/7-78
9-78
-69
(4,9:7+3,8)x2-78=(0,7+3,8)×2-78=
4,5×2-78=9-78=-69

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