Question

What is the rational number equivalent to 3.12121212121212121212......

Answer 1

3.12 (repeating) = 3 12/99 reduces to 3 4/33 or 103/33

if there is one number repeating, like 0.222...u put that one number over 9...making it 2/9.
if there is 2 numbers repeating, like 0.1313...u put the two repeating numbers over 99...making it 13/99
if there are 3 numbers repeating, like 0.123123...u put ur three repeating numbers over 999...making it 123/999