document.write( "Question 942939: solve by the method of substitution \r
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document.write( "4x+2y=10
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document.write( "x-y=13 \n" );
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Algebra.Com's Answer #575472 by 10009904@richland2.org(1)![]() ![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( " |