Question

решите плз. Срочно плз.

Answer 1

1)  (5/7)*2 = 10/14

1/2 * 7 = 7/14

10/14 - 7/14 = 3/14

2) 4/5 * 2 = 8/10

3/10-8/10= -5/10 = -1/2 = -0.5

Answer 2

$frac{5}{7} - frac{1}{2} = frac{10 - 7}{14} = frac{3}{14}$

$frac{3}{10} - frac{4}{5} = frac{3 - 8}{10} = - frac{5}{10} = - frac{1}{2}$
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