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Can somebody explain to me how to do this and the answers and how you got it

Can somebody explain to me how to do this and the answers and how you got it
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2 votes
Can somebody explain to me how to do this and the answers and how you got it

Can somebody explain to me how to do this and the answers and how you got it-example-1
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User Vladimir Perevalov
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8.3k points

1 Answer

7 votes
7. Easiest method is substitution. Since y=x/2, then:
2x+3(x/2)=28
8.Substituting again, we get:
3x-6x=6
-3x=6
x=-2
(-2,6)
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User SickDimension
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8.1k points
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