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2supra5 ori x= 4supra 15

Răspuns :

2xsupra5 = 4supra15
2x ori 15 = 4 ori 5
x= 20 supra 30
x= 2supra3
2/5×X = 4/15
4×5X = 15×2
20X = 30
X = 30/20
X = 3/2