document.write( "Question 1065121: One number is 3 more than twice the other number. If the sum of the two numbers is 21, find the two numbers. \n" ); document.write( "
Algebra.Com's Answer #680278 by JulietG(1812)\"\" \"About 
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Let A be the first number and B be the second.
\n" ); document.write( "What do we know from the problem?
\n" ); document.write( "A + B = 21
\n" ); document.write( "A = 2B + 3
\n" ); document.write( "Substitute the value of A from the second equation into the first.
\n" ); document.write( "A + B = 21
\n" ); document.write( "(2B+3) + B = 21
\n" ); document.write( "3B + 3 = 21
\n" ); document.write( "3B = 18
\n" ); document.write( "Divide
\n" ); document.write( "B = 6
\n" ); document.write( "If B is 6, then A is \"3 more than twice\" this. 3+2(6) = 3+12 = 15
\n" ); document.write( "To check the answer, put the values back into the original equation.
\n" ); document.write( "Does 15 + 6 = 21? Yes
\n" ); document.write( "Success!
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