Which of these strategies would eliminate a variable in the system of equations?
{
5
x
+
3
y
=
9
4
x
−
3
y
=
9

⎩
⎪
⎪
⎨
⎪
⎪
⎧


5x+3y=9
4x−3y=9

Add the equations. 3y and -3y will cancel.

Step-by-step explanation:

Then you are left with 9x =18. Solve for x by dividing both sides by 9 to get x=2. Substitute 2 in place of x in either of the original equations to solve for y.

4.6875 pounds

step-by-step explanation:

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .