document.write( "Question 251529: Solve by using the multiplication principal and then add:\r
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document.write( "7p+5q=4
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document.write( "8p-9q=17\r
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document.write( "I can not for the life of me figure out how to get one of these to cancel out so that I can eliminate it by using the multiplication principal first...i started by multiplying the first equation by 2 but that doesn't seem to work...so im not sure if i an doing this right...thanks :) \n" );
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Algebra.Com's Answer #183204 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! either multiply the first by 8 and the second by 7 and subtract the two new equations \n" ); document.write( "or multiply the first by 9 and the second by 5 and add the two new equations \n" ); document.write( " \n" ); document.write( " |