272727\ldots$ and $b = 0.727272\ldots$. We can express these repeating decimals as fractions. To do this, we can set $100a = 27.272727\ldots$ and $100b = 72.727272\ldots$. Subtracting the original equations from these gives $99a = 27$ and $99b = 72$, so $a =
Show more…