document.write( "Question 37232This question is from textbook
\n" ); document.write( ": solve the following systems of equation
\n" ); document.write( "x-y=3
\n" ); document.write( "2x-y=-1 \n" ); document.write( "

Algebra.Com's Answer #22915 by jcmtnez(53) $\"\"$ $\"About$

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We can solve this system by substitution:\r
\n" ); document.write( "\n" ); document.write( "x-y=3, From this equation we get x=3+y
\n" ); document.write( "2x-y=-1, Substituting in the second equation we get 2(3+y)-y=-1,
\n" ); document.write( "solving 6+2y-y=-1, y=-1-6, y=-7,
\n" ); document.write( "And replacing the obtained value in the equation x=3+y, we obtain x=3+(-7),
\n" ); document.write( "x=-4 \r
\n" ); document.write( "\n" ); document.write( "The solutions to the system are x=-4, y=-7.
\n" ); document.write( " $\"+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+x-3%2C+2x%2B1%29+\"$ \r
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