SOLUTION: 4x+4y= 6 3x-5y= 7 solve x, y

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Question 178227: 4x+4y= 6 3x-5y= 7 solve x, y

Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!

Line Eqns:
4x%2B4y=+6, EQN 1
+3x-5y=+7+, EQN 2
solve x, y
In EQN 1, we get: 4y=6-4x ---->cross%284%29y%2Fcross%284%29=%286-4x%29%2F4=%286%2F4%29-%284x%2F4%29---->y=cross%286%293%2Fcross%284%292-%28cross%284%29x%2Fcross%284%29%29
y=%283%2F2%29-x, EQN 3, subst. in EQN 2:
3x-5%28%283%2F2%29-x%29=7
3x-%2815%2F2%29%2B5x=7
3x%2B5x=7%2B%2815%2F2%29
8x=%2814%2B15%29%2F2----->8x%2A2=29----->16x=29
cross%2816%29x%2Fcross%2816%29=29%2F16
highlight%28x=29%2F16%29, subts. in EQN 3:
y=%283%2F2%29-%2829%2F16%29, Get LCD
y=%2824-29%29%2F16=highlight%28-5%2F16=y%29
We'll see the graph:
---->RED Line>>>> EQN 1; GREEN Line>>>> EQN 2, Intersect @ point (29/16,-5/16)
Thank you,
Jojo