document.write( "Question 387118: A=4b
\n" ); document.write( "A-b=9
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Algebra.Com's Answer #273643 by tara0066(31)\"\" \"About 
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A=(4B) (A)-B=9\r
\n" ); document.write( "\n" ); document.write( "On this one substitution is the best way to go. You can plug in 4B from the first one into the second one, replacing the A.\r
\n" ); document.write( "\n" ); document.write( "(4B)-B=9 Simplify
\n" ); document.write( "3B=9 Divide by 3
\n" ); document.write( "B=3\r
\n" ); document.write( "\n" ); document.write( "Next, plug that value for B into one of the original equations to solve for A.\r
\n" ); document.write( "\n" ); document.write( "A=4(B)
\n" ); document.write( "A=4(3)
\n" ); document.write( "A=12\r
\n" ); document.write( "\n" ); document.write( "Your answer is (12,3)\r
\n" ); document.write( "\n" ); document.write( "This is the point that these two lines will cross.
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