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a) 1/7+3/7-2/7 b) 15/25+345/25+130/25-301=​

A 173727 B 15253452513025301 class=

Răspuns :

a) 1/7+3/7-2/7=

4/7-2/7=

2/7

b) 15/25+345/25+130/25-301=

360/25+130/25-301=

490/25-301=

189/25

a) 1/7+3/7-2/7=4/7-2/7=2/7

b) 15/25+345/25+130/25-301=360/25+130/25-301=490/25-301/1=490/25-301/1 amplificat cu 25=7525/25-490/25=7035/25