document.write( "Question 6744: Even though I understand the foil process, we were asked a question like this;\r
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document.write( " I have the answer when solving for \"a\" which is 2, but how on earth did they get the answer. HELP! Can you I see the work on this type of problem. Thanks. \n" );
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Algebra.Com's Answer #3720 by IA(6)![]() ![]() ![]() You can put this solution on YOUR website! 2a + 3b= 19 \n" ); document.write( "5a - 2b= 0\r \n" ); document.write( "\n" ); document.write( "4a+6b=38 (double first equation) \n" ); document.write( "15a-6b=0 (triple second equation) \n" ); document.write( " to cancel out the b add the equations togther. \n" ); document.write( "this gives 19a = 38. divide both sides by 19. a=2. \n" ); document.write( "then substitute 2 into the equation for a and use the same method to solve b. \n" ); document.write( " |