elimination of 37x + 53y=320 and 53x + 37y=400
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Step-by-step explanation:
37x+53y=320------(i)
53x+37y=400-------(ii)
Adding eqn. (i) and (ii)------ we get----
90x+90y=720
i.e. x+y=8-------(iii)
Now subtracting eqn. (i) from (ii)-----we get-
16x-16y=80
i.e. x-y=5-------(iv)
Adding eqn. (iii) and (iv) we get
2x=13
x=13/2
now putting the value of x in eqn .(iii) we get-----
y=8-13/2
y=3/2
HENCE x=13/2 and y =3/2
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