Question

for which values of a and b does the following pair of linear equation have an infinite number of solution 2x+3y=7 ( a-b)x+(a+b)y=3a+b-2

Answer 1

3b=3

(b=3)

putting the value of b in equation (3)

a-5(1)=0

a-5=0

(a=5)

Answer 2

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