Question

|3х – 4| +7х при х=-7.​

Answer 1

Ответ:

|3×-7-4|+7×-7

|-(24-4)|+(-49)

-17-49

-32

Answer 2

To find the value of the expression |3x - 4| + 7x when x = -7, we substitute -7 into the expression:

|3(-7) - 4| + 7(-7)

First, we simplify the expression inside the absolute value brackets:

|(-21) - 4| + 7(-7)

|-25| + 7(-7)

The absolute value of -25 is 25:

25 + 7(-7)

Next, we perform the multiplication:

25 - 49

Finally, we subtract:

-24

Therefore, when x = -7, the value of the expression |3x - 4| + 7x is -24.