document.write( "Question 73111: Not too long ago Edwin greatly helped me solve a system of equations from a word problem, it did indeed help me however, i need to now use that system and solve it using the substitution and elimination methods... can u help me?... the system is....
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document.write( "s + p + c = 40
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document.write( " c = 4p
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document.write( " s = p - 2
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Algebra.Com's Answer #52376 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! s + p + c = 40 \n" ); document.write( "c = 4p \n" ); document.write( "s = p - 2\r \n" ); document.write( "\n" ); document.write( "--------------- \n" ); document.write( "The objective is to get an equation that has only one variable. \n" ); document.write( "You are told c=4p \n" ); document.write( "You are told s=p-2 \n" ); document.write( "Substitute that information into the 1st equation to get: \n" ); document.write( "(p-2) +p +4p = 40 \n" ); document.write( "6p-2=40 \n" ); document.write( "6p=42 \n" ); document.write( "p=7 \n" ); document.write( "---------- \n" ); document.write( "Then c=4p=4*7=28 \n" ); document.write( "And s=p-2=7-2=5 \n" ); document.write( "--------- \n" ); document.write( "Solution: \n" ); document.write( "p=7; s=5, c=28\r \n" ); document.write( "\n" ); document.write( "============== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |