" (4) "7x+3y=15;12y-5x=39

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

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

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

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

Solve by cross-multiplication method. (i) 8x-3y=12,5x=2y +7 (ii) 6x+ 7y -11 =0, 5x+ 2y =13 (iii) (2)/(x)+(3)/(y) =5, (3)/(x) -(1)/(y) +9=0

Evaluate : (viii) (7x + 15y) ( 5x - 4y)

{:("Column A", 7x + 3y = 12","3x + 7y = 8 , "Column B"),(x-y,,1):}