How to perform cross multiplication on linear equations?
Class 10th board important question
Rd sharma, pair of linear equations in two variables
mehakNewbie
Solve each of the following systems of equations by the method of cross-multiplication. 1. x + 2y + 1 = 0 2x – 3y – 12 = 0
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Solution:
The given system of equations is
x + 2y + 1 = 0
2x – 3y – 12 = 0
For cross-multiplication, we use
Comparing the above two equations with the general form, we get
Hence, the solution for the given system of equations is x = 3 and y = -2.