a) 1/3+2/5-7/15 b)5/3-2/3.(2/3-1/4) c)(22/33.4/9+5/9.22/33)    a/5/12+x=2/15 b/5x-3/5=-1/2

a) 1/3+2/5-7/15 b)5/3-2/3.(2/3-1/4) c)(22/33.4/9+5/9.22/33)    a/5/12+x=2/15 b/5x-3/5=-1/2
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