Question

ДАЮ 35БАЛЛОВ ПОМОГИТЕ ПЖ ОТВЕТ НАДО ОБЬЯСНЕНИЯ НЕХОЧУ 9ЗАДАНИЕ......▪☆♡☆▪
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Answer 1

1.
$\frac{45 \times 53 + 45 \times 17}{70 \times 72} = \frac{45(53 + 17)}{70 \times 72} = \\ \\ = \frac{45 \times70 }{70 \times 72} = \frac{45}{72} = \frac{15}{24} = \frac{5}{8} = 0.625$
2.
$\frac{19 \times 53 - 19 \times 25}{42 \times 38} = \frac{19 \times 28}{42 \times 38} = \frac{2}{6} = \frac{1}{3}$
3.
$\frac{51 \times 62}{17 \times 18 + 13 \times 17} = \frac{51 \times 62}{17 \times 31} = 6$
4.
$\frac{395 \times 43 + 5 \times 43}{695 \times 86 + 105 \times 86} = \frac{400 \times 43}{800 \times 86} = \frac{1}{4} = 0.25$
5.
$\frac{359 \times 23 - 59 \times 23}{758 \times 69 - 158 \times 69} = \frac{23 \times 300}{600 \times 69} = \frac{1}{6}$
6.
$\frac{282 \times 50 - 102 \times 50}{120 \times 293 - 93 \times 120} = \frac{50 \times 180}{120 \times 200} = \frac{3}{8} = 0.375$