Answer:
for five points? your out of your mind
first one is (5,4) lol ;)
Step-by-step explanation:
(74x-47y)-(68x+21y)
Add like-terms.
74x - 68x = 6x
-47y-(21y) = -68y
Your final answer is 6x-68y.
<h2>what does this mean what do u want me to do</h2>

We know that
and
are equal, and we're looking for their sum. First, we'll need to find the value of
.
Set the expressions equal to each other:

Subtract
from both sides:

Divide everything by
:

Now that we have the value of
, we can substitute it into the sum of the two expressions to get our final answer.

Substitute:

Simplify:
