Question

39x+18x-27x+56 при x=12

Answer 1

39х + 18х - 27х + 56 = 30 х + 56
30 * 12 + 56 = 360 + 56 = 416

Answer 2

To calculate the expression 39x + 18x - 27x + 56 when x = 12, you need to substitute the value of x into the expression and then simplify it.

Let's do that step by step:

1. Substitute x with 12: 39(12) + 18(12) - 27(12) + 56

2. Perform the multiplication: 468 + 216 - 324 + 56

3. Perform the addition and subtraction from left to right: (468 + 216) - 324 + 56 684 - 324 + 56 360 + 56 416

So, when x = 12, the expression 39x + 18x - 27x + 56 equals 416.