document.write( "Question 815013: how do you solve for these equations 4x+2y=9 & 2x+10y=9 using elimination technique because I don't understand. \n" ); document.write( "

Algebra.Com's Answer #490654 by TimothyLamb(4379) $\"\"$ $\"About$

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4x + 2y = 9
\n" ); document.write( "2x + 10y = 9
\n" ); document.write( "---
\n" ); document.write( "multiply by -2:
\n" ); document.write( "2x + 10y = 9
\n" ); document.write( "-4x - 20y = -18
\n" ); document.write( "---
\n" ); document.write( "add:
\n" ); document.write( "4x + 2y = 9
\n" ); document.write( "-4x - 20y = -18
\n" ); document.write( "---
\n" ); document.write( "-18y = -9
\n" ); document.write( "---
\n" ); document.write( "y = 1/2
\n" ); document.write( "x = ?
\n" ); document.write( "---
\n" ); document.write( "4x + 2y = 9
\n" ); document.write( "4x = 9 - 2y
\n" ); document.write( "x = 9/4 - (1/2)y
\n" ); document.write( "---
\n" ); document.write( "x = 9/4 - (1/2)(1/2)
\n" ); document.write( "x = 9/4 - 1/4
\n" ); document.write( "x = 8/4
\n" ); document.write( "x = 2
\n" ); document.write( "---
\n" ); document.write( "Answer:
\n" ); document.write( "x = 2
\n" ); document.write( "y = 1/2
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
\n" ); document.write( "---
\n" ); document.write( "Convert fractions, decimals, and percents:
\n" ); document.write( "https://sooeet.com/math/fraction-decimal-percent.php
\n" ); document.write( "---
\n" ); document.write( "Calculate and graph the linear regression of any data set:
\n" ); document.write( "https://sooeet.com/math/linear-regression.php \n" ); document.write( "

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