document.write( "Question 747697: How do I know that my solution to the equation makes sense?
\n" ); document.write( "Equation: (3I-20)+I=500
\n" ); document.write( "Solution: I=130 \n" ); document.write( "
Algebra.Com's Answer #455076 by tommyt3rd(5050)\"\" \"About 
You can put this solution on YOUR website!
We can check the correctness of a solution by testing it in the original equation. If the resulting calculation proves to be true, then our solution is correct.\r
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\n" ); document.write( "\n" ); document.write( "\"%0D%0A%283I-20%29%2BI=500%0D%0A\"\r
\n" ); document.write( "\n" ); document.write( "\"%0D%0A%283%28130%29-20%29%2B%28130%29=500%0D%0A\"\r
\n" ); document.write( "\n" ); document.write( "\"%0D%0A%28390-20%29%2B%28130%29=500%0D%0A\"\r
\n" ); document.write( "\n" ); document.write( "\"%0D%0A370%2B130=500%0D%0A\"\r
\n" ); document.write( "\n" ); document.write( "which is true, so our solution is correct\r
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\n" ); document.write( "\n" ); document.write( ":) \n" ); document.write( "
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