[" 12."3+x+42y=15],[1.7x+31y=63]

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Solve the following equations by Cramer’s method. 7x + 3y = 15 , 12y - 5x = 39

Solve the following equations by Cramer's method. 7x + 3y = 15, 12y - 5x = 39

Find the value of (x+y) and (x-y) , if (i) 15x-17y=11 , 17x-15y=21 . (ii) 12x+13y=29 , 13x+12y=21 .

The co-ordinates of the incentre of the triangle having sides 3x - 4y = 0, 5x + 12y =0 and y-15=0 are:

Find the orthocentre of the triangle whose sides have the equations y = 15, 3x = 4y, and 5x + 12y = 0.

7x + 3y = 4221x + 9y = 42

If 3X + 9 = 15 , then x + 12 =