document.write( "Question 357222: 3(a+b), for a=2 and b=4. I do not understand any of this. I need help. Thank you! \n" ); document.write( "
Algebra.Com's Answer #255119 by robertb(5830)\"\" \"About 
You can put this solution on YOUR website!
The concept is called substitution. Replace a by 2 and b by 4. You will get
\n" ); document.write( "3(2+4) = 3*6 = 18.
\n" ); document.write( "
\n" );