3x- y+7/11+2 = 10 2y+x+11/7= 10 …
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Preeti Dabral 2 years, 3 months ago
Given, 3x− y+711 +2=10
⇒33x−(y+7)+2211=10
⇒ 33x−y−7+22=110
⇒ 33x−y=95 ..(i)
Also, 2y+x+117 = 10
⇒14y+x+117 = 10
⇒ 14y+x+11=70
14y+x=59
14y=59−x
⇒ y = 59−x14
eq. (i) becomes
33x - (59−x14) = 95
⇒462x−59+x14 = 95
⇒ 463x - 59 = 1330
⇒ x = 3
When x = 3 eq. (i) becomes
33(3) - y = 95
⇒ y =4
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