Question

Evaluate the expression when w=-12.7, x= 14, and y=-5.1W-X-y

Answer 1

You have the following expression given in the exercise:

`w-x-y`

And you have the following values for "w", "x" and "y":

`\begin{gathered} w=-12.7 \\ x=14 \\ y=-5.1 \end{gathered}`

Then, to evaluate you need to follow these steps:

1. You have to substitute the values of "w", "x" and "y" into the expression:

`w-x-y=(-12.7)-(14)-(-5.1)`

2. Apply this sign rule for multiplication:

`-\cdot-=+`

Then:

`=-12.7-14+5.1`

3. Add the numbers with negative sign:

`=-26.7+5.1`

4. Finally, solve the subtraction (the result must have the sign of the number with the largest absolute value).

The answer is:

`=-21.6`