document.write( "Question 187937: i want to solve thisimultaneous equation 5x-5y=5,4x-3y=25\r
\n" ); document.write( "\n" ); document.write( "i took the first equation x=5+5y/5 and them
\n" ); document.write( "4(5-5y)/5-3y=25
\n" ); document.write( "i donīt understand the siplpification \n" ); document.write( "
Algebra.Com's Answer #140928 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
solve these simultaneous equations:
\n" ); document.write( "5x - 5y = 5
\n" ); document.write( "4x - 3y = 25
\n" ); document.write( ":
\n" ); document.write( "Take the 1st equation:
\n" ); document.write( "5x - 5y = 5
\n" ); document.write( "Simplify, divide by 5:
\n" ); document.write( "x - y = 1
\n" ); document.write( "x = y + 1; use this for substitution for x in the 2nd equation:
\n" ); document.write( ":
\n" ); document.write( "4x - 3y = 25
\n" ); document.write( "4(y+1) - 3y = 25
\n" ); document.write( "4y + 4 - 3y = 25
\n" ); document.write( "4y - 3y = 25 - 4
\n" ); document.write( "y = 21
\n" ); document.write( ":
\n" ); document.write( "Find x:
\n" ); document.write( "x = y + 1
\n" ); document.write( "x = 21 + 1
\n" ); document.write( "x = 22
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check solution in the 2nd equation
\n" ); document.write( "4(22) - 3(21) = 25
\n" ); document.write( "88 - 63 = 25; confirms our solutions \n" ); document.write( "
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