Question

solve the following pair of linear equation using cross multiplication method 2 X + 3 Y + 5 equal to zero 5 x minus 3 Y + 9 equal to zero​

Answer 1

Answer:

hope u r understand

Answer 2

Answer:

x= -2 and y= -1/3

Step-by-step explanation:

2x+3y+5=0.....(1)

5x-3y+9=0......(2)

by cross multiplication method

b1 c1 a1 b1

b2 c2 a2 b2

(cross multiply)

x/b1c2-b2c1=y/c1a2-c2a1=1/a1b2-a2b1

x/27-(-15)=y/25-18=1/-6-15

x/42=y/7=1/-21

x/42=1/-21

x=-42/21=-2

y/7=1/-21

y=-7/21=-1/3