Find p and q for which eqn has infinet solution:2x+3y=7 ,(p+q)x+(2p-q)y=21
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2/p+q=3/2p-q=7/21
2/p+q=1/3
3/2p-q=1/3
after calculating we get p=5,q=1
2/p+q=1/3
3/2p-q=1/3
after calculating we get p=5,q=1
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