document.write( "Question 13887: It says to solve the system of equations using the substitution method.\r
\n" ); document.write( "\n" ); document.write( "x+y=1
\n" ); document.write( "3x+4y=1\r
\n" ); document.write( "\n" ); document.write( "I think I'm supposed to see what X and Y are equal to, but I keep getting some pretty messed up answers.
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Algebra.Com's Answer #6971 by elima(1433)\"\" \"About 
You can put this solution on YOUR website!
x+y=1
\n" ); document.write( "3x+4y=1
\n" ); document.write( "Is all that means, is one equation is solved for one variable and substituted into the other equatioon to solve that equation.
\n" ); document.write( "First you need to find out what x or y =, lets take the first equation(since it would the easier one to solve).
\n" ); document.write( "x+y=1
\n" ); document.write( "x=-y+1
\n" ); document.write( "Now we substitute that answer for x in the equation;
\n" ); document.write( "3(-y+1)+4y=1
\n" ); document.write( "-3y+3+4y=1
\n" ); document.write( "y+3=1
\n" ); document.write( "y=-2
\n" ); document.write( "Now we have what y= , now we can solve for x;
\n" ); document.write( "3x+4(-2)=1
\n" ); document.write( "3x-8=1
\n" ); document.write( "3x=9
\n" ); document.write( "x=3
\n" ); document.write( "Hope you understand
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