Question

3х-2/у-1/ при х=1, у=-5

Answer 1

Ответ:4

Пошаговое объяснение:

1*3=3

3-2=1

ТАК КАК У НАС МОДУЛЬ Y ПОЛОЖИТЕЛЬНЫЙ

5-1=4

1*4=4

Answer 2

Ответ:

$\frac{-1}{6}$

Пошаговое объяснение:

Если х=1, у=-5, то 3х-2/у-1 = 3*1-2/-5-1 = 1 / -6 = -$\frac{1}{6}$

Answer 3

To evaluate the expression 3x - 2/y - 1/ when x = 1 and y = -5, we can substitute these values into the expression and perform the calculations.

Substituting x = 1 and y = -5, we get:

3(1) - 2/(-5) - 1/

Simplifying further:

3 - 2/(-5) - 1/

To calculate -2/(-5), we multiply the numerator and denominator by -1:

= 3 + (2/5) - 1/

Now, we have a common denominator of 5:

= 3 + 2/5 - 5/5

= 3 + 2/5 - 1

To add the fractions, we need a common denominator:

= 3 + (2/5)(5/5) - 1(5/5)

= 3 + 10/25 - 5/5

= 3 + 10/25 - 25/25

Now, we can subtract the fractions:

= 3 + (10 - 25)/25

= 3 + (-15)/25

= 3 - 15/25

Simplifying the fraction:

= 3 - 3/5

To subtract the fractions, we need a common denominator:

= (15/5) - (3/5)

= 12/5

Therefore, when x = 1 and y = -5, the expression 3x - 2/y - 1/ evaluates to 12/5 or 2.4.