SOLUTION: may you please hlep me solve this substitution problom 2x+5y=4 x+5y=7

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Question 172455: may you please hlep me solve this substitution problom
2x+5y=4
x+5y=7
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
Solved by pluggable solver: SOLVE linear system by SUBSTITUTION
Solve:
+system%28+%0D%0A++++2%5Cx+%2B+5%5Cy+=+4%2C%0D%0A++++1%5Cx+%2B+5%5Cy+=+7+%29%0D%0A++We'll use substitution. After moving 5*y to the right, we get:
2%2Ax+=+4+-+5%2Ay, or x+=+4%2F2+-+5%2Ay%2F2. Substitute that
into another equation:
1%2A%284%2F2+-+5%2Ay%2F2%29+%2B+5%5Cy+=+7 and simplify: So, we know that y=2. Since x+=+4%2F2+-+5%2Ay%2F2, x=-3.

Answer: system%28+x=-3%2C+y=2+%29.