Solve the following pairs of equations

Question

Philoid · Accepted Answer

Given pair of linear equations is

…(i)

and …(ii)

Let and then the above equations become:

…(iii)

and

…(iv)

On, multiplying Eq. (iv) by 2 and then adding with Eq. (iii), we get

( + (u - 2v) = (-2 + 32)

5u = 30

Now, put the value of u in Eq. (iv), we get

Hence, the required values of x and y are and respectively.