Question

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

Answer 1

A)$2/3+1/6= \frac{4}{6} +\frac{1}{6} = \frac{5}{6}$

б)$-1/3+2/5 = - \frac{5}{15} + \frac{6}{15} = \frac{1}{15}$

в)$-7/9+1/6 = - \frac{14}{18} + \frac{3}{18} = - \frac{11}{18}$

г)$2/3-1/6 = \frac{4}{6} - \frac{1}{6} = \frac{3}{6} = \frac{1}{2}$

д)$-1/3-2/5 = - \frac{5}{15} - \frac{6}{15} =- \frac{11}{15}$

е)$3/8+1/2 = \frac{3}{8} + \frac{4}{8} = \frac{7}{8}$

ж)$-2/3+1/6 = - \frac{4}{6} + \frac{1}{6}=- \frac{3}{6} = - \frac{1}{2}$

з)$7/9-1/6= \frac{14}{18} - \frac{3}{18} = \frac{11}{18}$

и)$-3/8-1/2=- \frac{3}{8} - \frac{4}{8} =- \frac{7}{8}$

к)$-2/3-1/6 =- \frac{4}{6} - \frac{1}{6}= -\frac{5}{6}$

л)$-3/8+1/2=- \frac{3}{8} + \frac{4}{8} = \frac{1}{8}$

м)$1/3-2/5 = \frac{5}{15} - \frac{6}{15} =- \frac{1}{15}$

Answer 2

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   
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