[5ax+6by=28],[3ax+4by=18]

Solve the following system of equations by method of cross-multiplication: 5ax+6by=28,quad 3ax+4by=18

ax+by=5 bx+ay=3

Add: 6ax - 2by + 3cz, 6by - 11ax - cz and 1- cz - 2ax - 3by

3ax-6ay-8by+4bx

If a : b = 4 : 5 " and " x : y = 5 : 7 then find the value of (5ax - 3by) : (by + 2ax) .

For the hyperbola 3x^(2) - 6y^(2) = - 18 find the length of transverse and conjugate axes and eccentricity .

If the curves y=ax^(3)-3ax+4a and y=12x+4a touches at x=0 then a =

Find the value of a, if x -2 is a factor of 2x^5- 6x^4 -2ax^3+ 6ax^2+ 4ax + 8.

If a : b = 3 : 4 " and " x : y = 5 : 7 , then find the value of (3ax - by) : (4by - 7ax) .