Question

помогите с примерами!!!!!срочно!!!15 баллов​

Answer 1

1) 0,5+1/3=5/6

2)5/18+4/81=53/162. 53/162+7/18=58/81.

58/81+5/81=7/9

3)9/25÷27/50=2/3

4) 18/49÷6/35=2 1/7

18/49÷2 1/7=6/35

Answer 2

Ответ:

$b)0.5 + \frac{1}{3 } = \frac{1}{2} + \frac{1}{3} = \frac{5}{6} \\ b) \frac{9}{25} \div \frac{27}{50} = \frac{9}{25} \times \frac{50}{27} = \frac{2}{3} \\ w) \frac{5}{18} + \frac{4}{81} + \frac{7}{18} + \frac{5}{81} = \frac{5 + 7}{18} + \frac{4 + 5}{81} = \frac{12}{18} + \frac{9}{81} = \frac{6 + 1}{9} = \frac{7}{9} \\ w) \frac{18}{49} \div x = \frac{6}{35} \\ \frac{18}{49} \times \frac{1}{x} = \frac{6}{35} \\ \frac{18}{49x} = \frac{6}{35} \\ 630 = 294x \\ 294x = 630 \\ x = \frac{15}{7}$