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suareza36
suareza36 suareza36
  • 19-01-2016
  • Mathematics
Answered

Solve each system of liner equations


y=2x+1

x+2y=17


pls help!

Verified Answer :

Billymkhoi
Billymkhoi Billymkhoi
  • 19-01-2016

Plug y=2x+1 into x+2y=17, we have:
x+ 2(2x+1)= 17
⇒ x+ 22x+ 21= 17 (distributive property)
⇒ x+ 4x+ 2= 17
⇒ 5x= 17-2
⇒ 5x= 15
⇒ x= 15/5
⇒ x= 3

y= 2x+1= 2*3+1= 7

Final answer: x= 3, y= 7~

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