Question

5,1*(x-2)-3*(1,2x-2) при x=-100​

Answer 1

Если не так, то мне пишите, пожалуйста.

Answer 2

To evaluate the expression 5.1*(x-2)-3*(1.2x-2) when x is equal to -100, we substitute -100 for x in the expression and perform the calculations:

5.1 * (-100 - 2) - 3 * (1.2 * (-100) - 2)

First, let's simplify the inner parentheses:

5.1 * (-102) - 3 * (-120 - 2)

Next, perform the multiplications inside the parentheses:

5.1 * (-102) - 3 * (-122)

Now, calculate the multiplications:

-520.2 - (-366)

To subtract a negative number, we change the operation to addition:

-520.2 + 366

Finally, perform the addition:

-154.2

Therefore, when x is equal to -100, the expression 5.1*(x-2)-3*(1.2x-2) evaluates to -154.2.