document.write( "Question 176237: Use linear combinations to solve the system of linear equations.
\n" ); document.write( "2q=7-5p
\n" ); document.write( "4p-16=q \n" ); document.write( "

Algebra.Com's Answer #131532 by Fombitz(32388) $\"\"$ $\"About$

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1. $\"2q=7-5p\"$
\n" ); document.write( "2. $\"4p-16=q\"$
\n" ); document.write( "We can use eq. 2 directly and substitute into eq. 1 to solve for p.
\n" ); document.write( "1. $\"2q=7-5p\"$
\n" ); document.write( " $\"2%284p-16%29=7-5p\"$
\n" ); document.write( " $\"8p-32=7-5p\"$
\n" ); document.write( " $\"13p=39\"$
\n" ); document.write( " $\"highlight%28p=3%29\"$
\n" ); document.write( "From eq. 2,
\n" ); document.write( "2. $\"4p-16=q\"$
\n" ); document.write( " $\"4%283%29-16=q\"$
\n" ); document.write( " $\"q=12-16\"$
\n" ); document.write( " $\"highlight%28q=-4%29\"$
\n" ); document.write( " \n" ); document.write( "

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