Review of Introductory Mathematics FRACTIONSComparing this list to the others, the denominators of 3, 12, and 6can all be calculated from the list, but 7 cannot be, so a 7 must beincluded in the list.2 x 2 x 3 x 7 = 84Step 3: Rewrite the equation171212232828111277461414Step 4: Add128456847784568420184AdditionandSubtractionDenominators of fractions being added or subtracted must be the same.The resulting sum or difference is then the sum or difference of the numerators of the fractionsbeing added or subtracted.Examples:= = 12313213= =471741757= =492942929= =81121151182511111Rev. 0 Page 33 MA-01

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