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1)find the lowest common denominator first in the given fractions.
 2)figure out how many times yourr current denominator goes into lowest common       denominator.multiply fraction's numerator and denominator by that number.
3)add or subtract the numerators not denominators given in the problem.
   1)lowest common denominator=12(4*3=12,6*2=12)
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Find the LCM of the denominators (down numbers),make them into like fractions, and then solve by the problem (+,-,*,/)
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