[" T-4.समीकरण "],[[2x+3y=13],[5x-2y=4]]

3y+2x=5,x+2y=4

[0.2x+0.3y=1.3],[0.4x+0.5y=2.3]

2x+3y=5 4x-5y=6

3 x + 2y = 12 , 5x - 2y = 4 .

Find the values of (x+y ) , if (i) 3x + 4y = 11 , 4x + 3y = 10 (ii) 5x - 2y = 4 , x + 8y = 26

5x+2y=4 7x+3y=5

{:(3x - 2y = 4),(5x - 2y = 0):}

Classify the following pairs of lines as coincident, parallel, perpendicular or intersecting : (i) 6x+14y-16=0 , 12x+28y-32=0 (ii) 3x-4y=8 , 3x+4y=11 (iii) 5x-2y=7 , 2y-5x=-7 (iv) 4x+7y=19 , 7x-4y=-2 (v) x-2y=7 , 4y-2x=13

If (3x -4y) : (2x -3y) = (5x -6y) : (4x -5y) , find : x : y .

Solve the following system of equations by matrix method : 5x+7y+2=0 4x+6y+3=0 5x+2y=3 3x+2y=5 3x+4y-5=0 x-y+3=0 3x+y=19 3x-y=23 3x+7y=4 x+2y=-1 3x+y=7 5x+3y=12