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Mathematics
Quinn Adams
21 March, 04:10
Find the value of y when x equals - 20
x+3y=7
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Tomas Kline
21 March, 06:17
0
x+3y=7
Substitute - 20 for x
-20+3y=7
Add 20 to both sides
3y=27
Divide 3 on both sides
Final Answer: y=9
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Melanie Golden
21 March, 07:35
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X=-20
Plug in - 20 into the equation to get y.
-20+3y=7
3y=27
y=9
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