Question

Solve the system of equation 2x – 3y =12 , x+2y + 1 = 0 by the method of cross multiplication.​

Answer 1

Answer:

hello mate

Step-by-step explanation:

x+2y=1

2x-3y=12

2x-3y-12=0

x/(-12*2+3*1) = -y/(-12*1-2*1)= 1/(-3*1-2*2)

x/(-21)=y/14= 1/(-17)

Then simplify with multipled by (-7),we

get:

x/3=y/(-3)=1

Then both x and y term equate to 1 respectively , we get value of x and y .

x/3=1

x=3

and

y/(-3)=1

y=-3

HOPE IT Will HELP YOU