Q1 of 227 Page 79

Solve the following systems of equation using cross multiplication method.

3x + 4y = 24, 20x – 11y = 47

The given system of equations is


3x + 4y – 24 = 0 and


20x – 11y – 47 = 0


For cross multiplication method, we write the coefficients as



Hence, we get = =


⇒ = =


⇒ = =


⇒ x = = 4


⇒ y = = 3


∴ (4, 3) is the solution to the given system.


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