munecamaria200
munecamaria200 munecamaria200
  • 18-12-2017
  • Mathematics
contestada

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 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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