document.write( "Question 1045062: Hello there i need help with this question.
\n" ); document.write( "using 8 rules of implication and 10 rules of replacement.Regular proof.
\n" ); document.write( "1.A>~B
\n" ); document.write( "2.BvD
\n" ); document.write( "3.~Dv-c
\n" ); document.write( "4.E>C/A>~E
\n" ); document.write( "

Algebra.Com's Answer #660468 by robertb(5830)\"\" \"About 
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1. A>~B -----------------------hypothesis
\n" ); document.write( "2. BvD -----------------------hypothesis
\n" ); document.write( "3. ~B > D ---------------------material implication on #2
\n" ); document.write( "4. A > D -----------------------hypothetical syllogism from #1 and #3
\n" ); document.write( "5. ~Dv~C ---------------------hypothesis
\n" ); document.write( "6. D > ~C ----------------------material implication on #5
\n" ); document.write( "7. A > ~C ---------------------hypothetical syllogism from #4 and #6
\n" ); document.write( "8. E > C -----------------------hypothesis
\n" ); document.write( "9. ~C > ~E --------------------contrapositive of #8
\n" ); document.write( "10. A > ~E ---------------------hypothetical syllogism from #7 and #9
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