Выполните сложение:2/51+1/9+3/17:  2/21+4/15+6/35:   5/8+1/6+7\12:  3/11+9\22+4/55:   1/24+11/30+5/12,

2/51+ 1/9+3/17= 6/153+ 17/153+ 27/153= 50/153; 2/21+ 4/15+6/35= 10/105+ 28/105+ 18/105=56/105; 5/8+ 1/6+7/12= 15/24+4/24+14/24=33/24= 1 9/24= 1 3/8; 3/11+9/22+4/55=30/110+ 45/110+8/110=83/110; 1/24+11/30+5/12=5/120+ 44/120+ 50/120= 99/120=33/40.

[latex] \frac{2}{51}+ \frac{1}{9} + \frac{3}{17}= \frac{6+17+27}{153} = \frac{50}{153} [/latex] [latex] \frac{2}{21}+ \frac{4}{15}+ \frac{6}{35}= \frac{10+28+18}{105} = \frac{56}{105} [/latex] [latex] \frac{5}{8}+ \frac{1}{6}+ \frac{7}{12}= \frac{15+4+14}{24} = \frac{33}{24} [/latex] = [latex]1 \frac{9}{24} [/latex] [latex] \frac{3}{11}+ \frac{9}{22}+ \frac{4}{55}= \frac{30+45+8}{110} = \frac{83}{110} [/latex] [latex] \frac{1}{24}+ \frac{11}{30}+ \frac{5}{12}= \frac{5+44+50}{120} = \frac{99}{120} [/latex] = [latex] \frac{33}{40} [/latex]