document.write( "Question 942939: solve by the method of substitution \r
\n" ); document.write( "\n" ); document.write( "4x+2y=10
\n" ); document.write( "x-y=13
\n" ); document.write( "

Algebra.Com's Answer #575472 by 10009904@richland2.org(1)\"\" \"About 
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solve for y with the second equation
\n" ); document.write( "4x+2y=10\r
\n" ); document.write( "\n" ); document.write( "x-y=13
\n" ); document.write( "Subtract the x on both sides so the equation ends up looking like this
\n" ); document.write( " -y=-x+13
\n" ); document.write( "then divide all terms by -1
\n" ); document.write( "so then it is y=x-13
\n" ); document.write( "and then you substitute the y in 4x+2y=10 for x-13
\n" ); document.write( "4x+2(x-13)=10
\n" ); document.write( "then you want to distribute the 2 into the x and the -13
\n" ); document.write( "4x+2x-26=10
\n" ); document.write( "add the like terms
\n" ); document.write( "6x-26=10
\n" ); document.write( "add 26 to both sides of the equal sign so the -26 cancels out
\n" ); document.write( "you end up with
\n" ); document.write( "6x=36
\n" ); document.write( "Now you wanna isolate the x so divide by 6 on both sides
\n" ); document.write( "6x/6 = x 36/6 = 6
\n" ); document.write( "x=6
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