document.write( "Question 373554: a first number plus twice a second number is 22. Twice the first number plus the second totals to 23 \n" ); document.write( "
Algebra.Com's Answer #265846 by robertb(5830)![]() ![]() You can put this solution on YOUR website! let f = the first number, and s = the 2nd number. \n" ); document.write( "f + 2s = 22, \n" ); document.write( "2f + s = 23. \n" ); document.write( "From the first equation, f = 22-2s. Substitute into the 2nd equation: \n" ); document.write( "2(22-2s) + s = 23, \n" ); document.write( "44 - 4s +s = 23, \n" ); document.write( "-3s = -21, \n" ); document.write( "s = 7, the second number. \n" ); document.write( "f = 22-2s = 22 - 14 = 8, the first number. \n" ); document.write( " |