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Slade Fox
Mathematics
5 July, 00:53
What is - 5x+2y=9
y=7x
+4
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2
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Hunter Norton
5 July, 01:01
0
Step-by-step explanation:
-5x+2y=9
y=7x
Since you know what y is relative to x, you can plug it into the formula to find your answer.
-5x+2 (7x) = 9
14x-5x=9
x=1
y=7
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Joshua Huffman
5 July, 01:16
0
x=1, y = 7
Step-by-step explanation:
-5x+2y=9
y=7x
Substitute the second equation in for the first
-5x + 2 (7x) = 9
-5x + 14x = 9
Combine like terms
9x = 9
Divide by 9
9x/9 = 9/9
x = 1
Now find y
y = 7 (1)
y = 7
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