document.write( "Question 29335: x=4y
\n" ); document.write( "y=3x+1 \n" ); document.write( "

Algebra.Com's Answer #16125 by ikdeep(226) $\"\"$ $\"About$

You can put this solution on YOUR website!
for convience lets put numbering of the given equations...\r
\n" ); document.write( "\n" ); document.write( "x=4y...........equation no. 1
\n" ); document.write( "y=3x+1.........equation no. 2\r
\n" ); document.write( "\n" ); document.write( "Now, by substitution method ,,,substitute the value of \"x = 4y\" from equation no. 1 to equation no 2 ....we get...\r
\n" ); document.write( "\n" ); document.write( "y = 3(4y) + 1 \r
\n" ); document.write( "\n" ); document.write( "y = 12y + 1 \r
\n" ); document.write( "\n" ); document.write( "y - 12y = 1\r
\n" ); document.write( "\n" ); document.write( "-11y = 1\r
\n" ); document.write( "\n" ); document.write( "y = 1/-11\r
\n" ); document.write( "\n" ); document.write( "or y = -1/11 \r
\n" ); document.write( "\n" ); document.write( "Now, put the vlaue of y= -1/11 in any of the equation ...but for easy calulation,,,,I choose equation no.1....\r
\n" ); document.write( "\n" ); document.write( "x = 4y\r
\n" ); document.write( "\n" ); document.write( "x = 4(-1/11)\r
\n" ); document.write( "\n" ); document.write( "x = -4/11\r
\n" ); document.write( "\n" ); document.write( "Therefore, the values are ,,,\r
\n" ); document.write( "\n" ); document.write( " y = -1/11\r
\n" ); document.write( "\n" ); document.write( " x = -4/11\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );