SOLUTION: Solve using substitution: 4x − y − 4 = 0 7y = 29 + 9x

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Question 324645: Solve using substitution:
4x − y − 4 = 0
7y = 29 + 9x


Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.4x-y-4+=+0
2.7y+=+29+%2B+9x
From eq. 1,
4x-y-4=0
y=4x-4
Substitute into eq. 2,
7%284x-4%29=29%2B9x
28x-28=29%2B9x
19x=57
highlight%28x=3%29
Then,
y=4%283%29-4
y=12-4
highlight%28y=8%29