document.write( "Question 117611: how do u solve y=0.45x+39.99 using substitution and elimination? \n" ); document.write( "
Algebra.Com's Answer #85593 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
You don't.
\n" ); document.write( "You have to have two equations in the same two unknowns
\n" ); document.write( "to use substitution to solve the system of equations.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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