Question

solve for x and y by cross multiplication method x+y=2 and ax+ay=a+b​

Answer 1

Step-by-step explanation:

use this method to solve the question

Answer 2

Step-by-step explanation:

x+y=2 and ax+ay=a+b

x+y -2=0 and ax+ay-(a+b)=0

a1=1 b1=1 c1= -2

a2=a b2=a c2= -(a+b)

X Y 1

____ _____ _____

1 -2 1 1

a -(a+b) a a

here a1b2-b2a1= a-a=0

we cannot do in this method

we can solve in this method if it has unique solution only

the system has infinitely many solutions or no soution