Question

What is the sum of (–2.1x + 3.7) and (5 + 4.9x)?
Negative 7.0 x + 8.7
Negative 2.8 x + 8.7
2.8 x + 8.7
7.0 x + 8.7

Answer 1

\[ (-2.1 x+3.7)+(5+4.9 x) \]
you should add the terms together, just as following:
\[ =-2.1 x+4.9 x+3.7+5 \]
do the math, and you end up getting this
\[ =2.8 x+8.7 \]

Answer 2

did you search for this answer?

Answer 3

For this question just add the two together, like this
\(-2.1x+4.9x+3.7+5\)

Let's add the x portions first, \(-2.1x+4.9x\)
just add \(-2.1+4.9\) together then add \(x\) to the end

then you just add the sum of \(3.7+5\) to the end of the equation, so

\((sum~of~-2.1x+4.9x)(plus~or~minus)(sum~of~3.7+5)\)

then you will have your answer.