Posted by ladybug Please Help!! on Monday, June 18, 2012 at 8:51pm.
Solve using elimination method. If the system has no system or infinite number of solutions, state this. Please show all work. I need to show how I came about my answer. I need this as soon as possible please. I would appreciate any and all help!!
2x+2y=20
2x2y=4

Intermediate Algebra  bobpursley, Monday, June 18, 2012 at 9:02pm
add the equations, and get...
4x=20 or x=5, then figure y

Intermediate Algebra  ladybug Please Help!!, Monday, June 18, 2012 at 10:23pm
2x+2y=20
2x2y=4
_________
4y= 16
y=16
2x+2(40)=20
2x+8=20
2x=12
x=6
(x,y)= (6,4)
Is this correct???

Intermediate Algebra  Steve, Tuesday, June 19, 2012 at 5:04am
how would one know whether the answer is correct?
Plug your values for x and y into both equations and see whether the equations hold.
In this case, your answer is correct.
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