Question

Solve this equation x+2y=1,(a-b)x+ (a+b)y=a-b-2

Answer 1

Answer:

y(a-3b)=2

Step-by-step explanation:

ax-bx+ay+by=a-b-2

a(x+y)-b(x-y)=a-b-2

=> x+2y=1

=> x=1-2y

a(1-2y+y)-b(1-2y-y)=a-b-2

a(1-y)-b(1-3y)=a-b-2

a-ay-b+3by=a-b-2

both side a-b cancelled

-ay+3by= -2

ay-3by=2

y(a-3b)=2