1.

for what value p and q the system of equations has infinite number solution 2x+3y=7;( p+q )x+( 2p-q)y=21​

Answer»

ANSWER:

p = 5

q = 1

Step-by-step EXPLANATION:

A SYSTEM of equations is said to have infinite solutions if the RATIO of their corresponding coefficients are equal. NAMELY,

\frac{p+q}{2} = \frac{2p-q}{3}  = \frac{21}{7}

From this, we get

p + q = 6

2p - q = 9

Working further on this, you will get

p=5 and q=1



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