SOLUTION: what is the correct way to write the soultion: 4x + 5y=10, 8x +10y=20

Question 205363: what is the correct way to write the soultion: 4x + 5y=10, 8x +10y=20
Answer by alicealc(293) (Show Source): You can put this solution on YOUR website!
because the 1st equation and the 2nd equation actually is the same (the 2nd equation is twice the 1st equation),
let x = any real number k
4x + 5y = 10
4k + 5y = 10
5y = 10 - 4k
y =
y =

so, the solution is:
x = k
y =
which k is any real number
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