Question

Решите пожалуйста, все есть на снимке

Answer 1

Ответ:

Пошаговое объяснение:

1) 1/36+1/45=5/180+4/180=9/180=1/20

1:1/20=1*20=20

2) 1/35-1/60=12/420-7/420=5/420=1/84

1:1/84=1*84=84

3) 5/22-8/11=5/22-16/22=-11/22=-1/2

-1/2*11/5=-11/10=-1 1/10

4) 12/17+2 7/11=132/187+2 119/187=2 251/187=3 64/187

1 8/17:3 64/187=25/17*187/625=11/25

5) -12*(-8.6)=103.2

103.2-9.4=93.8

6) =4*10^8*19*10^-6=76*10²=76*100=7600

Answer 2

$\frac{1}{ \frac{1}{36} + \frac{1}{45} } = \frac{1}{ \frac{1}{20} } = 20$

$\frac{1}{ \frac{1}{35} - \frac{1}{60} } = \frac{1}{ \frac{1}{84} } = 84$

$( \frac{5}{22} - \frac{8}{11} ) \times \frac{11}{5} = ( - \frac{1}{2} ) \times \frac{11}{5} = - 1 \frac{1}{10}$

$1 \frac{8}{17} \div ( \frac{12}{17} + 2 \frac{7}{11} ) = 1 \frac{8}{17} \div 3 \frac{64}{187} = \frac{11}{25}$

$- 12 \times ( - 8.6) - 9.4 = 103.2 - 9.4 =$

$= 93.8$

$(2 \times {10}^{2} ) ^{4} \times (19 \times {10}^{6} ) =$

$= (2 \times 100) ^{4} \times (19 \times 1000000) =$

${200}^{4} \times 19000000 =$

$1600000000 \times 19000000 =$

$= 30400000000000000$