Question

2) вирішить приклад на всі дії
Вийде 75 чи 135?​

Answer 1

Ответ:     75.

Объяснение:

1)  3 3/4 : 3 = (3*4+3)/4 : 3 = 15/4 * 1/3 = 5/4 = 1 1/4 = 1.25;

2)  1.25+3.5 = 4.75;

3)   4.75 * 2.4 = 11.4;

4)  12 13/20 - 11.4 = 12.65-11.4 = 1.25;

5)   1/3 * 0.05 = 1/3 * 5/100 = 5/300 = 1/60;

6)  1.25 : 1/60 = (125/100) *60  = 75.

Answer 2

$\frac{12\frac{13}{20}-(3\frac{3}{4}:3+3.5)*2.4}{\frac{1}{3} *0.05} =\frac{\frac{253}{20}-(\frac{15}{4} :\frac{3}{1} +\frac{35}{10}) *\frac{24}{10} }{\frac{1}{3}*\frac{5}{100} } = \frac{\frac{253}{20}-(\frac{15}{4} *\frac{1}{3} +\frac{7}{2}) *\frac{12}{5} }{\frac{1}{3}*\frac{1}{20} } =\frac{\frac{253}{20}-(\frac{5}{4} +\frac{7}{2}) *\frac{12}{5} }{\frac{1}{60} } =$

$= \frac{\frac{253}{20}-(\frac{5}{4} +\frac{14}{4}) *\frac{12}{5} }{\frac{1}{60} }=\frac{\frac{253}{20}-\frac{19}{4} *\frac{12}{5} }{\frac{1}{60} }=\frac{\frac{253}{20}-\frac{57}{5} }{\frac{1}{60} }=\frac{\frac{253}{20}-\frac{228}{20} }{\frac{1}{60} }=\frac{\frac{25}{20} }{\frac{1}{60} } =\frac{25}{20} *\frac{60}{1} =25*3=75$