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It is -10 - -13 = 3
13/5 = 2 and 3/5. You can get the mixed fraction by seeing how many 5's you can take out of 13. You can take 2 fives from 13, and it leaves 3 left over. So, the mixed fraction is 2 and 3/5.
It is [(3 + -13)/2, (3 + -13)/2] = [-10/2, -10/2] = (-5, -5)
you need to find out what can you multiply by 5 minus 2 will equal 13. so x=3
13 is a factor of 52 so all we need is the LCM of 52 & 24: 24 = 2 x 2 x 2 x 3; 52 = 2 x 2 x 13; LCM = 13 x 24 = 312