Question

Which expression is equivalent to −2.6+(−2.9)+(−7.1) ?
(2.6+2.9)+(−7.1)
−(2.6−2.9)+(−7.1)
−(2.6+2.9+7.1)
−2.6+(2.9+7.1)
Pls help

Answer 1

Hello there!

The answer to your question is:
-(2.6+2.9+7.1)

This is because that negative sign can be distributed into the parentheses to get the same expression.
-2.6-2.9-7.1=-2.6+(-2.9)+(-7.1)

I hope this helps!
-HuronGirl

Answer 2

The expression −2.6+(−2.9)+(−7.1) is equivalent to option C) −(2.6+2.9+7.1)

What is associative law of accition?

The associative Law simply states that with addition and multiplication of numbers,if we change the grouping of the numbers in the equatio,ti will not affect the answer.

The result of the equation −2.6+(−2.9)+(−7.1) = -12.6

Calculating the value of all option:-

A)  (2.6+2.9)+(−7.1) = -1.6

B)  −(2.6−2.9)+(−7.1) =-6.8

C)  −(2.6+2.9+7.1) =-12.6

D)  −2.6+(2.9+7.1) =+7.4

∴Option C is equivalent to  −2.6+(−2.9)+(−7.1)  because Its answer is not changing.

Learn more about associative law here: brainly.com/question/5323628

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