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This can be solved a number of ways. In thi case I prefer substitution. y-3=7 simplifies to y=10. Substitute 10 in for y so you get x+3(10)=6. Simplify this and you get x=-24

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βˆ™ 15y ago
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Q: If y-3 equals 7 and x plus 3y equals 6 then x equals?
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