anonymous551
Solve. Check. Explain.
2x5=y
x7=y
Addition/Elimination Method.
(I'm a visual learner)



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ajprincess
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Add both the equations.
Can u plz tell me vat u get @anonymous551?

anonymous551
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3x  12y = 0

ajprincess
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U r partly right. Plz check 12y

anonymous551
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3x  12 = 0y ..?
or
3x +12 = 0y

ajprincess
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hmm it is
3x12=0
2x5=y(1)
x7=y(2)
(1)+(2)=>2x5+x7=yy
3x12=0
Nw using 3x12=0
Can u find x @anonymous551?

anonymous551
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3x12=0
+12 +12
3x = 12

x = 4

ajprincess
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ya perfect:)
Now plug in that value of x in 2x5=y to find y. Can u do it?

anonymous551
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2(4)  5 = y
8  5 = y
3 = y

ajprincess
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ya perfect:)

anonymous551
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NO. Sorry.
2x 5 = 3

anonymous551
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because 3 = Y

ajprincess
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x=4 and y=3
is correct.
Nw plug in these values in
x7=y and check if Right hand side = left hand side

anonymous551
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Wait. One second..

anonymous551
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Oh.. Okay.
2x  5 = y
2(4)  5 = 3
8  5 = 3
True.
x7=y
(4)  7 = (3)
3 =3
true.

anonymous551
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I though the equation was 2x  12 for some reason.. Thanks for going through this w/ me.

anonymous551
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:)

anonymous551
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But you need to improve you explanation. If I didn't already know how to do this, I would have been so confused.

ajprincess
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Welcome:) oh sorry. anyways thanx for the feedback:)