Q. 1 C5.0( 1 Vote )

# Solve the followi

Answer :

Given equations are

, 7x— 15y = 21

Change the given equations to the form,

a_{1}x + b_{1}y + c_{1} = 0 and a_{2}x + b_{2}y + c_{2} = 0 …(i)

⇒

And7x — 15y – 21 = 0

⇒ 5x + 3y – 15 = 0 and 7x — 15y – 21 = 0

On comparing with (i) we get,

a_{1} = 5, b_{1} = 3, c_{1} = – 15; a_{2} = 7, b_{2} = – 15, c_{2} = – 21

Applying cross multiplication method which says,

Putting the given values in the above equation we get,

Similarly,

∴The solution of the pair of equations is (3, 0).

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