Question

Select the expressions equivalent to

Answer 1

Answer:

D

Step-by-step explanation:

We have the expression:

$(-2x+8.1y)-(-9x+5.3y)$

First, let's distribute the negative on the right. This gives us:

$=(-2x+8.1y)+(9x-5.3y)$

Now, let's combine like terms:

$=(-2x+9x)+(8.1y-5.3y)$

Add:

$=(7x)+(8.1y-5.3y)$

Subtract:

$=(7x)+(2.8y)$

Simplify:

$=7x+2.8y$

So, our answer is D.

And we're done!

Answer 2

Answer:

d.  7x + 2.8y

Step-by-step explanation:

You have to combine like factors to solve.  Distribute before solving.

(-2x + 8.1y) - (-9x + 5.3y)

-2x + 8.1y + 9x - 5.3y

7x + 8.1y - 5.3y

7x + 2.8y