document.write( "Question 72712: Help??? I attempted this one and got an answer of 3. Please walk me through this one.\r
\n" ); document.write( "\n" ); document.write( "Find the solution to the equation: 6x - 3 = -2x + 21 \n" ); document.write( "
Algebra.Com's Answer #51982 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Find the solution to the equation:
\n" ); document.write( "Perform the necessary operations to get the variable on the left and the numbers on the right
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\n" ); document.write( "6x - 3 = -2x + 21
\n" ); document.write( ":
\n" ); document.write( "Add 2x to each side:
\n" ); document.write( "6x + 2x - 3 = -2x + 2x = 21
\n" ); document.write( "8x - 3 = 21
\n" ); document.write( ":
\n" ); document.write( "Add 3 to each side;
\n" ); document.write( "8x -3 +3 = 21 + 3
\n" ); document.write( "8x = 24
\n" ); document.write( ":
\n" ); document.write( "Divide both sides by 8
\n" ); document.write( "(8/8)x = 24/8
\n" ); document.write( "1x = 3
\n" ); document.write( "or just
\n" ); document.write( "x = 3, just like you said
\n" ); document.write( ":
\n" ); document.write( "But you can be sure of your solution. Substitute 3 for x in the original
\n" ); document.write( "equation and see if it is true:
\n" ); document.write( " 6x - 3 = -2x + 21
\n" ); document.write( "6(3) - 3 = -2(3) + 21
\n" ); document.write( "18 - 3 = -6 + 21
\n" ); document.write( "15 = 15 proves your solution,
\n" ); document.write( ":
\n" ); document.write( "do this for all your solutions and you will know for sure you're right.
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