document.write( "Question 119801: if(x, -4) is a solution to the equation 4x - 5y =8, what is the value of x? \n" ); document.write( "
Algebra.Com's Answer #87791 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
Since we have the solution (x,-4), this means \"y=-4\".\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"4x-5y=8\" Start with the given equation\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"4x-5%28-4%29=8\" Plug in \"y=-4\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"4x%2B20=8\" Multiply\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"4x=8-20\"Subtract 20 from both sides\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"4x=-12\" Combine like terms on the right side\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x=%28-12%29%2F%284%29\" Divide both sides by 4 to isolate x\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x=-3\" Divide\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "--------------------------------------------------------------\r
\n" ); document.write( "\n" ); document.write( "Answer:\r
\n" ); document.write( "\n" ); document.write( "So our answer is \"x=-3\"
\n" ); document.write( "
\n" );