Question

7/x-7/5x при x=-0,2​

Answer 1

Ответ:

-28

Пошаговое объяснение:

7/x-7/5x=5×7/5х-7/5х=35/5х-7/5х= 35-7/5х=28/5х

28/5х при х=-0,2

28/5×(-0,2)= -28

Answer 2

To evaluate the expression when x = -0.2, substitute the value of x into the expression and simplify:

7/x - 7/5x

Replacing x with -0.2:

7/(-0.2) - 7/(5 * -0.2)

Simplifying further:

-35 + 7/(-1)

-35 - 7

= -42

Therefore, when x = -0.2, the expression 7/x - 7/5x evaluates to -42.