Question

3х-(х+4) при х=-7 Нелп

Answer 1

3x-(x+4)= 3x-x-4= 2x-4

2x-4= 2×(-7)-4=-14-4=-18

Ответ: -18

Answer 2

Ответ:

-18

Пошаговое объяснение:

3x - (x + 4) = 3x - x - 4 = 2x - 4 = 2(x - 2)

Подставляем x = -7:

2(-7 - 2) = 2*(-9) = -18.

Answer 3

Sure, I can help you evaluate the expression 3x - (x + 4) when x is equal to -7.

Step 1: Substitute x with -7 in the expression: 3(-7) - (-7 + 4)

Step 2: Perform the operations inside the parentheses: -21 - (-3)

Step 3: Simplify the expression by subtracting the negative value: -21 + 3

Step 4: Perform the addition: -18

So, when x is equal to -7, the value of the expression 3x - (x + 4) is -18.