document.write( "Question 1202588: If a + 2b = 3c and 2a + 4b + c = 56 what is the value of c?\r
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document.write( "(A) -12
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document.write( "(B) -4
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document.write( "(C) 8
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document.write( "(D) 12
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document.write( "(E) 24 \n" );
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Algebra.Com's Answer #837512 by greenestamps(13200)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "(1) a+2b = 3c \n" ); document.write( "(2) 2a+4b+c = 56 \n" ); document.write( "In the second equation, \"2a+4b\" is \"a+2b\" times 2; and the first equation gives us the value of \"a+2b\" in terms of c: \n" ); document.write( "2a+4b+c = 56 \n" ); document.write( "2(a+2b)+c = 56 \n" ); document.write( "2(3c)+c = 56 \n" ); document.write( "6c+c = 56 \n" ); document.write( "7c = 56 \n" ); document.write( "c = 8 \n" ); document.write( "ANSWER: (C) 8 \n" ); document.write( " \n" ); document.write( " |