Q8 of 92 Page 77

Let us solve the following simultaneous linear equations in two variables by applying cross multiplication method.

x + 5y = 36


x + 5y - 36 = 0



⇒ 3(x + y) = 5(x - y) (Cross Multiplication)


⇒ 2x - 8y = 0


⇒ x - 4y = 0



To solve the equation by cross multiplication method, we use:



Putting the values, we get:




So, and


⇒ x = 16 and y = 4


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