document.write( "Question 470933: using cramer's rules ,solve the following system of linear epuations
\n" ); document.write( "x+2y=7
\n" ); document.write( "3x-4y=-9 \n" ); document.write( "

Algebra.Com's Answer #323021 by Tatiana_Stebko(1539) $\"\"$ $\"About$

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using Cramer's rules $\"x=det%28A1%29%2Fdet%28A%29\"$ , $\"y=det%28A2%29%2Fdet%28A%29\"$ ,
\n" ); document.write( " $\"det%28A%29=abs%28matrix%282%2C2%2C1%2C2%2C3%2C-4%29%29=1%2A%28-4%29-2%2A3=-10\"$
\n" ); document.write( " $\"det%28A1%29=abs%28matrix%282%2C2%2C7%2C2%2C-9%2C-4%29%29=7%2A%28-4%29-2%2A%28-9%29=-10\"$
\n" ); document.write( " $\"det%28A2%29=abs%28matrix%282%2C2%2C1%2C7%2C3%2C-9%29%29=1%2A%28-9%29-7%2A3=-30\"$
\n" ); document.write( " $\"x=%28-10%29%2F%28-10%29=1\"$ , $\"y=%28-30%29%2F%28-10%29=3\"$ ,
\n" ); document.write( "Answer (1,3) \n" ); document.write( "

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