Question

Решите срочно!!! 1. 1)13/18*6/7= 2)(1/5)3= 2. (6/11+3/22)*1/15= 3.Найдите 1)3/4 от 16 2)2/3 от 4/9 3)15% от 14 4. 1)(2/3+4/7)*42= 2)( 2 1/4- 1 1/2)*8= 3)4 1/6* 3 2/7 + 2 5/7 * 4 1/6= Спасибо заранее!!!

Answer 1

Ответ:

1.

1)13/(3*7)=13/21

2)(1/5)*(15/5)=3/5

2.(12/22+3/22)*1/15=15/22*1/15=1/22

3.

1)(6/4)*3=1.5*3=4.5

2) (4/9*3)/2=(4/3)/2=0.6

3)(15*14)/100=2.1

4.

1)(14/21+12/21)*42=(26/21)*42=26*2=52

2)(21/4-22/4)*8=(-1/4)*8=-1/2

3)1312/42+1025/42=2337/42=55.6

Answer 2

Давайте решим каждое из ваших математических выражений:

1. a) $\frac{13}{18} \times \frac{6}{7}$ $\frac{13}{18} \times \frac{6}{7} = \frac{13 \times 6}{18 \times 7} = \frac{78}{126} = \frac{13}{21}$

   b) $\frac{1}{5} \times 3$ $\frac{1}{5} \times 3 = \frac{3}{5}$

2. $(\frac{6}{11} + \frac{3}{22}) \times \frac{1}{15}$ $(\frac{6}{11} + \frac{3}{22}) \times \frac{1}{15} = \frac{12}{22} \times \frac{1}{15} = \frac{6}{22} \times \frac{1}{15} = \frac{3}{11} \times \frac{1}{15} = \frac{3}{165} = \frac{1}{55}$

3. a) $\frac{3}{4} \times 16$ $\frac{3}{4} \times 16 = \frac{3 \times 16}{4} = \frac{48}{4} = 12$

   b) $\frac{2}{3} \times \frac{4}{9}$ $\frac{2}{3} \times \frac{4}{9} = \frac{8}{27}$

   c) $15\% \text{ от } 14$ $15\% \text{ от } 14 = \frac{15}{100} \times 14 = \frac{3}{20} \times 14 = \frac{42}{20} = \frac{21}{10} = 2.1$

4. a) $(\frac{2}{3} + \frac{4}{7}) \times 42$ $(\frac{2}{3} + \frac{4}{7}) \times 42 = \frac{14}{21} + \frac{12}{21} = \frac{26}{21} \times 42 = 2 \times 2 \times 42 = 84$

   b) $(2 \frac{1}{4} - 1 \frac{1}{2}) \times 8$