Question

solv the following pair of linear equation of two variables by the method of elimination:
3x-5y=4 & x/2-y/9=7/18​

Answer 1

Answer:

multiply 15 to the first equation to remove fraction

we get, 3x – 5y = 4 …[1]

Now let’s, multiply 18 to the second equation to remove fraction

we get, 9x – 2y = 7 …[2]

Now, let’s find eq[2] – eq[1] × 3

⇒ 9x – 2y – 3(3x – 5y) = 7 – 4×3

⇒ y = -5/13

Now if we put this result in eq[1]

3X - 5 ( -5 / 13) = 4

⇒ 39x = 27

⇒

x = 9/13

Thanking:

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