Find the value of P and q for which the following system of equations has infinite no. Of solutions:
2x+3y=7; (p+q)x+(2p-q)y=21
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a1la2=b1/b2=c1/c2
2/(p+q)=3/(2p-q)=7/21
2/(p+q)=1/3
p+q=6........(1)
p=6-q
3/(2p-q)=1/3
9=2p-q
9=2(6-q)-q
9-12=-3q
q=1
substituting values in (1)
p=5
2/(p+q)=3/(2p-q)=7/21
2/(p+q)=1/3
p+q=6........(1)
p=6-q
3/(2p-q)=1/3
9=2p-q
9=2(6-q)-q
9-12=-3q
q=1
substituting values in (1)
p=5
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