document.write( "Question 6744: Even though I understand the foil process, we were asked a question like this;\r
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\n" ); 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.
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Algebra.Com's Answer #3720 by IA(6)\"\" \"About 
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.
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