Question

For what values of a does the pair of equation 2x+ 3y =7 and( a- 1)x+(a+1)y=3a-1 have infinite many solution?

Answer 1

Answer:

Firstly solve bracket

Make it simple eqn

Step-by-step explanation:

2x+3y-7=0

(a-1) x+(a+1)-3a-1=0

a1/a2=2/a-1

b1/b2=3/a+1

C1/c2=-7/-3a-1

Compare a1/a2, b1/b2,c1/c2

2/a-1=3/a+1=-7/+(3a-1)

2a+2-3a-3=9a