1)1/4+1/2=1/4+2/4=3/4 3/4:3=3/4*1/3=1/4 2)1/4:3=1/4*1/3=1/12 1/2:3=1/2*1/3=1/6 1/12+1/6=1/12+2/12=3/12=1/4
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1)1/4+1/2=1/4+2/4=3/4 3/4:3=3/4*1/3=1/4 2)1/4:3=1/4*1/3=1/12 1/2:3=1/2*1/3=1/6 1/12+1/6=1/12+2/12=3/12=1/4