solve the following simultaneous equation ( by the method of elimination)
plz tell me how will i do this sum
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sivaprasath:
is it u or 4 ?
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Answer:
x = 36 , y = 12
Step-by-step explanation:
Given :
To find the value of x & y,
if,
...(i)
&
...(ii)
Solution :
From (ii)
⇒
⇒
⇒
⇒
⇒
⇒ ..(iii)
__
By adding 5 × (i) + (ii)
⇒ 5 (x + y) + (2x - y) = 5 (48) + 12
⇒ 5x + 5y + 2x - 5y = 240+12
⇒ 7x = 252
⇒ x =
⇒ x = 36
By substituting the value of x in (i),
⇒ x + y 48
⇒ 36 + y = 48
⇒ y = 48 - 36
⇒ y = 12,.
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