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12+23=...\frac{1}{2}+\frac{2}{3}=...21+32=...
36+46=76\frac{3}{6}+\frac{4}{6}=\frac{7}{6}63+64=67
1+22+3=35\frac{1+2}{2+3}=\frac{3}{5}2+31+2=53
612+412=1012\frac{6}{12}+\frac{4}{12}=\frac{10}{12}126+124=1210
24+23=47\frac{2}{4}+\frac{2}{3}=\frac{4}{7}42+32=74