Răspuns:
Explicație pas cu pas:
__ __
aa/bb = ( aa : 11)/(bb:11) = a/b
___ __
aaa/bbb = ( aaa:111)/(bbb:111) = a/b
____ ___
aaaa/bbbb = (aaaa:1111)/(bbbb:1111) = a/b
a, b ≠ 0
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__ __ __ ___ ____ ___
⇒ a/b = aa/bb = aaa/bbb = aaaa/bbbb