munecamaria200 munecamaria200

18-12-2017
Mathematics

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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 class=

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jorel1380 jorel1380

18-12-2017

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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