Question

afla doua numere x si y stiind ca x-y=54, iar x:y=7

Answer 1

x-y=54
x:y=7=>x=7y

7y-y=54
6y=54=>y=$\dfrac{54}{6}$=9

x=7·9=63

Proba

63-9=54
63:9=7

Answer 2

x I-----I-----I-----I-----I-----I-----I-----I
y I-----I

dif. dintre ele este 54 -> 6 segmente=54
1 segment = 54:6=9
y=1×9=9
x=7×9=63

v : 63-9=54
63:9=7