As a rule, worth remembering, the fractions with denominators of multiples of 2, 5 or combination of the two, result in terminating decimals and all the rest- non-terminating.
<u>Considering this we can state:</u>
9/5, 5/16, 3/25, 2/5, 3/20 are terminating decimals
7/12, 1/7, 9/11, 11/15, 7/18 are non-terminating or repeating decimals
You need to find opposite terms when using the elimination method to solve a system of equations so that way you can find out the y or the x after you have crossed out the fraternal twins. You have to get rid of either the y or x in order to work it out and find the y or x value.
