Вычислите а)2/3+1/6 б)-1/3+2/5 в) -7/9+1/6 г) 2/3-1/6 д) -1/3-2/5 е) 3/8+1/2 ж) -2/3+1/6 з) 7/9-1/6 и)-3/8-1/2 к) -2/3-1/6 Л) -3/8+1/2 м) 1/3-2/5 РЕШЕНИЕ ПОДРОБНОЕ СРОЧНО

a)[latex]2/3+1/6= \frac{4}{6} +\frac{1}{6} = \frac{5}{6} [/latex] б)[latex]-1/3+2/5 = - \frac{5}{15} + \frac{6}{15} = \frac{1}{15} [/latex]  в)[latex] -7/9+1/6 = - \frac{14}{18} + \frac{3}{18} = - \frac{11}{18} [/latex] г)[latex]2/3-1/6 = \frac{4}{6} - \frac{1}{6} = \frac{3}{6} = \frac{1}{2} [/latex] д)[latex]-1/3-2/5 = - \frac{5}{15} - \frac{6}{15} =- \frac{11}{15} [/latex] е)[latex]3/8+1/2 = \frac{3}{8} + \frac{4}{8} = \frac{7}{8} [/latex] ж)[latex]-2/3+1/6 = - \frac{4}{6} + \frac{1}{6}=- \frac{3}{6} = - \frac{1}{2} [/latex] з)[latex]7/9-1/6= \frac{14}{18} - \frac{3}{18} = \frac{11}{18} [/latex] и)[latex]-3/8-1/2=- \frac{3}{8} - \frac{4}{8} =- \frac{7}{8} [/latex] к)[latex]-2/3-1/6 =- \frac{4}{6} - \frac{1}{6}= -\frac{5}{6} [/latex] л)[latex]-3/8+1/2=- \frac{3}{8} + \frac{4}{8} = \frac{1}{8} [/latex] м)[latex]1/3-2/5 = \frac{5}{15} - \frac{6}{15} =- \frac{1}{15} [/latex]

2/3+1/6=2/6+2/6=4/6=2/3   -1/3+2/5=-5/15+6/15=-11/15   -7/9+1/6=-14/18+3/18=-17/18  2/3-1/6=4/6-1/6=3/6=1/2  3/8+1/2=3/8+4/8=7/8  -2/3+1/6=-4/6+1/6=-5/6   7/9-1/6=14/18-3/18=11/18  -1/3-2/5=-5/15-6/15=1/15  -3/8-1/2=3/8-4/8=1/8    -2/3-1/6=-2/6-2/6=-1/6  -3/8+1/2=-3/8+4/8=-7/8  1/3-2/5=5/15-6/15=-1/15    Наверно так