document.write( "Question 821918: how do you solve this math problem : one online bookstore charges $10 per book and $8 for shipping. Another online bookstore charges $12 per book and offers free shipping. For what number of books is the cost the same? \n" ); document.write( "
Algebra.Com's Answer #494528 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "y = 10x + 8
\n" ); document.write( "y = 12x
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\n" ); document.write( "put the system of linear equations into standard form
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\n" ); document.write( "10x - y = -8
\n" ); document.write( "12x - y = 0
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\n" ); document.write( "copy and paste the above standard form linear equations in to this solver:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
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\n" ); document.write( "answer:
\n" ); document.write( "x= 4
\n" ); document.write( "y= 48
\n" ); document.write( "if you purchase 4 books, you pay the same net cost of $48 for the books, regardless of which store you make your purchase from
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\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
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\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
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\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php \n" ); document.write( "
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