If p and q are whole numbers and pq = 196, what is the value of (p - 3)(q+1) ?
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Given pq = 196
(p-3)(q+1)
pq+p-3q-3
=196+p-3q-3
196+p-3(q-1)
(p-3)(q+1)
pq+p-3q-3
=196+p-3q-3
196+p-3(q-1)
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