निम्नलिखित वाक्य

Solve: 2x + 3y = 19 and x − y = 2, Find x and y

For which value of m, there is no solution to the equation -

a – b = 5

ma – 4b = 1

The ratio of roots of the equation mx² + nx + n = 0 is α/ β = a/b, then find the value of `sqrt(a/b)+sqrt(b/a)+sqrt(n/m)`

I. 2p² + 5p + 2 = 0               II. 2q² + 11 q + 14 = 0

If (5√P - 7√Q) = 5, [1.5P = 4Q-(R/3)+9] and (√P/√Q) = 1.6, then find out the value of ‘R’.

I. p² - 365 = 364

II. q - √ 529 = √ 169

Find the value of 'a' and 'b' which satisfy the following equations:

9a + 7b = 30

4a - 5b = 62

A line passes through the points (2, 3) and (5, −3). Find its equation.

If 2x + 3y = 27 and 3x - y = 13, find (x + y).