Hello,
Why does xx=11, yy=11, z=11 The explanation States this is a fact, excellent. How does one come up with the number 11? Without this basic understanding the rest of the problem is another language. This is the exact reason people don't like math, poor explanations such as this. Sometime you need to hold the hand to the other side.
Thank you
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It comes from the place values.
XX=10X+1X=11X