Answers

2014-10-07T20:38:47+08:00
Ahhhmmm i think . . . 5 :D hahahahha
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2014-10-07T21:32:38+08:00
(I have made my own way and rules to find LCM)
5x6=30(LCM)
30x7=210


105       4
210       8
=cross multiply either way
=840
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