Question

find the sum of
(-10), (92), (84) and (-15)

Answer 1

(- 10) + (92) + (84) + (- 15) = 151

Given data:

The numbers (- 10), (92), (84) and (- 15)

To find:

Their sum

Concept:

We must know the product rule of signs (+, -):

• (+) (+) = (+)
• (+) (-) = (-)
• (-) (+) = (-)
• (-) (-) = (+)

Also, if 12 be positive number, then 12 can be written as (+ 12).

Step-by-step explanation:

Now, (- 10) + (92) + (84) + (- 15)

= (- 10) + (+ 92) + (+ 84) + (- 15)

= - 10 + 92 + 84 - 15 [using the product rule of signs]

= 92 + 84 - 10 - 15 [rearranging the numbers]

= 176 - 25

= 151

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