SOLUTION: x=-4 5x2=4y+3x2-8

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Question 258874: x=-4
5x2=4y+3x2-8
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
We have the following equations
(i) x=-4
(ii) 5x%5E2=4y%2B3x%5E2-8+
--
step 1 - substitute -4 for x and get
(iii) 5%2A%28-4%29%5E2+=+4y+%2B+3%2A%28-4%29%5E2-8
and then
(iv) 80+=+4y+%2B+48+-8
--
step 2 - solve for y to get
(v) 80+=+4y+%2B+40
subtract 40 to get
(vi) 4y+=+40
divide to get
y+=+10