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FrozenT [24]
3 years ago
14

HELPPPPP FASTTTTTTTTTT PLEAAAAASE

Mathematics
1 answer:
emmainna [20.7K]3 years ago
6 0

Answer: Third option.

Step-by-step explanation:

To solve this exercise it is important to remember the following:

1) By definition, equivalent expression have the same value, but they look different.

2) The multiplication of signs:

(+)(+)=+\\(-)(-)=+\\(-)(+)=-\\(+)(-)=-

Then, given the following expression provided in the exercise:

=(8.4x+2.9)+(-3.7x+5)

You need to distribute the postive sign:

8.4x+2.9-3.7x+5

And finally, you must add the like terms:

=8.4x-3.7x+2.9+5=4.7x+7.9

As you can notice, the expression obtained matches with the expression shown in the third option.

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