[x+y=5],[2x-4y=5]

The perimeter of a parallelogram whose sides are represented by the lines x+2y+3=0 , 3x+4y-5=0,2x+4y+5=0 and 3x+4y-10=0 is equal to

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

2x+3y=0 3x+4y=5

2x-y=4 ; 5x+4y=1

Solve by the elimination method: 2x+3y=2, 5x+4y=3(5)/(6)

4x+2y = 8.5, 2x + 4y = 9.5

Find (x+y)-:(x-y), if x=2/3, y=3/2 (ii) x=2/5, y=1/2 x=5/4, y=(-1)/3