If x=2p-2,y=p+6,x+y=6 find p is
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2
2(3p+3)−
5
2
(3+4x)=
2
9
At x=2p
⇒2(3p+3)−
5
2
(3+4×2p)=
2
9
⇒6p+6−
5
2
(3+8p)=
2
9
⇒
5
30p+30−6−16p
=
2
9
⇒2(14p+24)=45
⇒28p=45−48=−3
∴p=
28
−3
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0
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