SOLUTION: x + 3y = 7 4x-5y = 96 using substitution

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Question 462805: x + 3y = 7
4x-5y = 96 using substitution
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

x+%2B+3y+=+7..........1
4x-5y+=+96..........2
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x+%2B+3y+=+7..........1..solve for x
x+=-+3y%2B+7.......substitute in 2
4%283y%2B+7%29-5y+=+96.....solve for y
12y%2B+28-5y+=+96
7y=+96-28
7y=+68
y=+68%2F7
y=+9.72
now find x
x+=-+3%28+9.72%29%2B+7
x+=-29.16%2B+7
x+=-22.16
so, x+=-22.16 and y=+9.72

check:

x+%2B+3y+=+7
-22.16+%2B+3%289.72%29+=+7
-22.16+%2B+29.16+=+7
7+=+7