Question

Urgent, dau coroana ​

Answer 1

Explicație pas cu pas:

$2.\frac{13}{8} + \frac{2}{8} - \frac{5}{8} = \frac{15}{8} - \frac{5}{8} = \frac{10}{8}$

$3. \frac{31}{17} = \frac{62}{x - 2}$

x=17×2+2=34+2=36

$\frac{31}{17} = \frac{62}{36 - 2} \div 2$

$\frac{31}{17} = \frac{62 \div 2}{(36 - 2) \div 2}$

$\frac{31}{17} = \frac{31}{17}$

$4.a) \frac{5}{27} + \frac{1}{27} = \frac{6}{27}$

$4.b) \frac{27}{27} - ( \frac{5}{27} + \frac{5}{27} + \frac{1}{27} + \frac{1}{27} )$

$\frac{27}{27} - \frac{12}{27} = \frac{15}{27}$

$\frac{5}{27} + \frac{1}{27} = a \: doua \: luna$