Question

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

Answer 1

3x-4y=7------------------eq(1)

5x+2y=3---------------eq(2)

multiply eq(2) by '2' and add in equation (1)

10x+ 4y= 6

3x - 4y =7

adding we get

13x= 13

x=13/13

x=1

put x=1 in eq(1)

3(1)-4y=7

3-4y=7

-4y=7-3

-4y=4

y=-4/4

y=-1