document.write( "Question 1042390: (PvQ)&R
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Algebra.Com's Answer #657387 by robertb(5830)\"\" \"About 
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1. (PvQ)&R ------------------Hypothesis
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\n" ); document.write( "3. (Q&R)>S ------------------Hypothesis
\n" ); document.write( "4. (P&R)v(Q&R) --------------Distributivity on #1
\n" ); document.write( "5. (R&P)v(Q&R) --------------Commutativity on #4
\n" ); document.write( "6. S ----------------------Case Analysis based on #2, #3, and #5
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