Which expression is equivalent to −10 + (−40) + (−90)?

10 + 40 + 90
−10 + (−90) + (−40)
−10 − (40 − 90)
−(10 − 40) + (−90)

 The correct option is

(B) −10 + (−90) + (−40)

Step-by-step explanation:  We are given to select the expression that is equivalent to the following expression :

First, we will evaluate the value of expression (i) as follows :

Now, we will evaluate the values of the optional expressions one by one.

Option (A) :

We have

So, this option is NOT correct.

Option (B) :

We have

So, this option is CORRECT.

Option (C) :

We have

So, this option is NOT correct.

Option (D) :

We have

So, this option is NOT correct.

Thus, the correct option is

(B) −10 + (−90) + (−40)

78.59 is the mean

step-by-step explanation: