Answer:
4.
Explanation:
What is elimination method?
In the elimination method you either add or subtract the equations to get an equation in one variable
Lets solve for X first.
We have the equations:
5x+3y=8
4x+y=8
We take the GCM (3) and multiply everything on the bottom by -3 and multiply everything on the top by 1 (which in this case, dont touch the top) which we should now have:
5x+3y=8
-12x-3y=-36
We can now eliminate the Y and add like terms from the top to bottom, from which we should now have remaining:
-7x=-28
Solve for X
x=4
Now that we have 4, plug it in to one of the equations, which we should plug it in to 4x+y=12
4(4)+y=12
Simplify:
16+y=12
Subtract 16 to the other side:
y=-4
So now we got our x and y vaule, from which is how we get the answer (4,-4)