document.write( "Question 579431: how do you solve x=y+2 4y=3x-5 using substitution method? \n" ); document.write( "
Algebra.Com's Answer #371056 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! solve x=y+2 4y=3x-5 using substitution \n" ); document.write( ": \n" ); document.write( "x = y + 2 \n" ); document.write( "4y = 3x - 5 \n" ); document.write( ": \n" ); document.write( "From the 1st equation we know that x = (y+2), therefore we can substitute (y+2) for x in the 2nd equation. \n" ); document.write( "4y = 3(y+2) - 5 \n" ); document.write( "4y = 3y + 6 - 5 \n" ); document.write( "4y - 3y = 1 \n" ); document.write( "y = 1 \n" ); document.write( ": \n" ); document.write( "Use the 1st equation to find x, replace y with 1 \n" ); document.write( "x = 1 + 2 \n" ); document.write( "x = 3 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check this in the 2nd equation by substituting 3 for x and 1 for y \n" ); document.write( "4(1) = 3(3) - 5 \n" ); document.write( "4 = 9 - 5; confirms our solutions of x and y \n" ); document.write( ": \n" ); document.write( "That was pretty easy, wasn't it? \n" ); document.write( " |