document.write( "Question 554062: 4x-3y=-5
\n" ); document.write( "2x-y=-7 \n" ); document.write( "

Algebra.Com's Answer #361206 by Maths68(1474) $\"\"$ $\"About$

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$\"4x-3y=-5\"$ .........(1)
\n" ); document.write( " $\"2x-y=-7\"$ ..........(2)
\n" ); document.write( "Multiply (1) by 2 and (2) by 4
\n" ); document.write( " $\"8x-6y=-10\"$ .........(3)
\n" ); document.write( " $\"8x-4y=-28\"$ .........(4)
\n" ); document.write( "Subtract (4) from (3)
\n" ); document.write( " $\"8x-6y=-10\"$
\n" ); document.write( " $\"-8x%2B4y=%2B28\"$
\n" ); document.write( "----------------
\n" ); document.write( " $\"-2y=18\"$
\n" ); document.write( "Divide by -2 both sides of above equation
\n" ); document.write( " $\"-2y%2F-2=18%2F-2\"$
\n" ); document.write( " $\"y=-9\"$
\n" ); document.write( "Put the value of y in (1)
\n" ); document.write( " $\"4x-3y=-5\"$ .........(1)
\n" ); document.write( " $\"4x-3%28-9%29=-5\"$
\n" ); document.write( " $\"4x%2B27=-5\"$
\n" ); document.write( " $\"4x=-5-27\"$
\n" ); document.write( " $\"4x=-32\"$
\n" ); document.write( " $\"4x%2F4=-32%2F4\"$
\n" ); document.write( " $\"x=-8\"$ \r
\n" ); document.write( "\n" ); document.write( "x,y=-8, -9\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Check
\n" ); document.write( "=====
\n" ); document.write( "Put the value of x and y in (2)
\n" ); document.write( " $\"2x-y=-7\"$ ..........(2)
\n" ); document.write( " $\"2%28-8%29-%28-9%29=-7\"$
\n" ); document.write( " $\"-16%2B9=-7\"$
\n" ); document.write( " $\"-7=-7\"$
\n" ); document.write( " \n" ); document.write( "

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