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

asked Jul 4, 2018 39.9k views

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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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