Question

Выполни вычитание алгебраических дробей

Answer 1

Ответ:

$\frac{3(t-2)}{28t(t-2)}$

Объяснение:

$\frac{c}{4t-8} - \frac{c}{7t-14} = \frac{7t-14 - 4t+8}{(4t-8)(7t-14)} =\frac{3t-6}{28t^2-56t} = \frac{3(t-2)}{28t(t-2)}$

Answer 2

$\dfrac{c}{4t-8} -\dfrac{c}{7t-14} =\dfrac{c}{4(t-2)} -\dfrac{c}{7(t-2)}=\dfrac{7c-4c}{28(t-2)}=\dfrac{3c}{28(t-2)}\\\\\\Otvet:\boxed{\dfrac{3c}{28(t-2)}}$