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va rog frumos ex 7 10 puncte

Va Rog Frumos Ex 7 10 Puncte class=

Răspuns :

a) x=2,3cm+2,7cm=5cm
b) x=57mm-3,7cm=57mm-37mm=20mm
c) x=0,49dm-37mm=49dm-37mm=12mm
a) x=2,3+2,7=5 (cm)             53mm=5,5cm
b) x=5,5-3,7=1,8(cm)             0,49 dm=4,9cm; 37mm=3,7cm
c)x=4,9-3,7=1,2(cm)