document.write( "Question 437699: solve for subsitution\r
\n" ); document.write( "\n" ); document.write( "15x-10y=1
\n" ); document.write( "15y=2+5x\r
\n" ); document.write( "\n" ); document.write( "8x+5y+14
\n" ); document.write( "x=52-9y\r
\n" ); document.write( "\n" ); document.write( "solve equation by graphong\r
\n" ); document.write( "\n" ); document.write( "x+y=4
\n" ); document.write( "y-x=4\r
\n" ); document.write( "\n" ); document.write( "solve by elimination
\n" ); document.write( "8x-y=47
\n" ); document.write( "x+y=16 \n" ); document.write( "
Algebra.Com's Answer #302781 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
15x-10y=1.............1
\n" ); document.write( "15y=2+5x ---------2
\n" ); document.write( "/15
\n" ); document.write( "y=0.13+ 0.33x
\n" ); document.write( "Plug the value of y in (1)
\n" ); document.write( "15x-10(0.13+0.33x)=1
\n" ); document.write( "15x-1.33-3.33x=1
\n" ); document.write( "15x-3.33x=1+1.33
\n" ); document.write( "11.67x=2.33
\n" ); document.write( "/11.67
\n" ); document.write( "x=0.2
\n" ); document.write( "Plug the value of x in (1)
\n" ); document.write( "15x-10y =1
\n" ); document.write( "15*0.2-10y=1
\n" ); document.write( "3-10y=1
\n" ); document.write( "-10y=-2
\n" ); document.write( "/-10
\n" ); document.write( "y=0.2
\n" ); document.write( ".......................\r
\n" ); document.write( "\n" ); document.write( "8x+5y=14 .............1
\n" ); document.write( "9y=52-x ---------2
\n" ); document.write( "/9
\n" ); document.write( "y=5.78-0.11x
\n" ); document.write( "Plug the value of y in (1)
\n" ); document.write( "8x+5(5.78-0.11x)=14
\n" ); document.write( "8x+28.89-0.56x=14
\n" ); document.write( "8x-0.56x=14-28.89
\n" ); document.write( "7.44x=-14.89
\n" ); document.write( "/7.44
\n" ); document.write( "x=-2
\n" ); document.write( "Plug the value of x in (1)
\n" ); document.write( "8x+5y=14
\n" ); document.write( "8*-2+5y=14
\n" ); document.write( "-16+5y=14
\n" ); document.write( "5y=30
\n" ); document.write( "/5
\n" ); document.write( "y=6
\n" ); document.write( "..................................\r
\n" ); document.write( "\n" ); document.write( "x+y=4 .............1
\n" ); document.write( "-x+y =4 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -1
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-x-y=-4
\n" ); document.write( "-x+y=4
\n" ); document.write( "Add the two equations
\n" ); document.write( "-2x = 0
\n" ); document.write( "x=0
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "x+y=4
\n" ); document.write( "y=4
\n" ); document.write( "equation1
\n" ); document.write( "when x= 0 y=4(0,4)
\n" ); document.write( "when y =0,x=4(4,0)
\n" ); document.write( "Equation 2
\n" ); document.write( "when x= 0,y=4(0,4)
\n" ); document.write( "when y =0x=-4(-4,0)
\n" ); document.write( "...
\n" ); document.write( "
\n" ); document.write( "................\r
\n" ); document.write( "\n" ); document.write( "8 x + -1 y = 47 .............1
\n" ); document.write( "1 x + 1 y = 16 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by 1
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "8 x -1 y = 47
\n" ); document.write( "1 x 1 y = 16
\n" ); document.write( "Add the two equations
\n" ); document.write( "9 x = 63
\n" ); document.write( "/ 9
\n" ); document.write( "x = 7
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "8 x + -1 y = 47
\n" ); document.write( "56 + -1 y = 47
\n" ); document.write( " -1 y = 47 -56
\n" ); document.write( " -1 y = -9
\n" ); document.write( " y = 9 \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );