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Fiind data proportia x/y=4/5,completeaza spatiile ptr. a obtine proportii:
a) 2x/y= /
b)3x/2y= /


Răspuns :

X/y=4/5 deci 2x/y=2×4/5=8/5

3x/2y=(3/2)×(4/5)=(3×4)/(2×5)=12/10=6/5