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МатематикаВопрос:
К) 8\(\cdot\)\(\left\)\(-\frac{1}{3}\right\)+7\(\cdot\)\(\left\)\(-\frac{1}{3}\right\)
Ответ:
Решение:
\(8\cdot\left(-\frac{1}{3}\right)+7\cdot\left(-\frac{1}{3}\right) = \left(-\frac{1}{3}\right)\cdot(8+7) = \left(-\frac{1}{3}\right)\cdot 15 = -5\)
Ответ: -5
Похожие
- A) 7,8+3\(\frac{5}{8}\)-2,8-3\(\frac{3}{8}\)
- Б) 4\(\frac{3}{8}\)-3\(\frac{3}{7}\)-9,5+5\(\frac{1}{8}\)
- B) 4\(\frac{9}{14}\)-\(\frac{5}{12}\)-3\(\frac{3}{14}\)+1\(\frac{1}{14}\)
- Г) \( 3\frac{1}{3}-0,8-2\frac{3}{4}+0,3+1\frac{1}{12} \)
- Д) -2-(-50)\(\cdot\) 6\(\cdot\) 12
- Е) -0,2\(\cdot\) 0,8\(\cdot\) (-5)\(\cdot\) (-1,25)
- Ж) -\(\frac{2}{3}\)\(\cdot\)\(\left\)\(-\frac{5}{14}\right\)\(\cdot\)\(\frac{3}{8}\)\(\cdot\)\(\frac{7}{5}\)
- 3) -3\(\frac{1}{3}\)\(\cdot\)\(\left\)\(-1\frac{2}{7}\right\)\(\cdot\)(-3)\(\cdot\)(-7)
- И) 0,3\(\cdot\)(-0,6)-(-0,7)\(\cdot\)(-0,6)
- Л) -\(\frac{2}{11}\)-0,8+0,3\(\cdot\)\(\left\)\(-\frac{2}{11}\right\)
- М) \(\left(-\frac{2}{7}-\frac{3}{4}\right)\cdot(-28)\)
- Н) -0,2\(\cdot\) 2\(\frac{3}{5}\)\(\cdot\)(-0,5)\(\cdot\)\(\left\)\(-\frac{5}{13}\right\)
- О) \(\left(-1\frac{1}{2}-\frac{1}{7}\right)\cdot 14\)
- П) -2,7\(\cdot\) 7\(\frac{1}{3}\)\(\cdot\)\(\left\)\(-\frac{4}{11}\right\)\(\cdot\)\(\left\)\(-1\frac{9}{4}\right\) \(\cdot\) 0,625
- Р) -4\(\frac{3}{7}\):0,375\(\cdot\) 7,75:(-0,9)\(\cdot\) 1\(\frac{13}{15}\):\(\left\)\(-\frac{1}{5}\right\)
- С) 7\(\frac{2}{3}\)\(\cdot\)\(\left\)\(-\frac{9}{11}\right\):4,6-(-2,75):3\(\frac{3}{4}\)
- Т) -5,4\(\cdot\)\(\left\)\(-1\frac{2}{9}\right\):3,75\(\cdot\)\(\left\)\(-4\frac{1}{6}\right\)
