document.write( "Question 247484: The sum of two numbers is twentyone. three times the smaller is two less than twice the larger number. find the two numbers \n" ); document.write( "
Algebra.Com's Answer #180530 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! x+y=21 or x=21-y \n" ); document.write( "3x=2y-2 substitute (21-y) for x in this equation & solve for y. \n" ); document.write( "3(21-y)=2y-2 \n" ); document.write( "63-3y=2y-2 \n" ); document.write( "-3y-2y=-2-63 \n" ); document.write( "-5y=-65 \n" ); document.write( "y=-65/-5 \n" ); document.write( "y=13 ans. \n" ); document.write( "x+13=21 \n" ); document.write( "x=21-13 \n" ); document.write( "x=8 ans. \n" ); document.write( "Proof: \n" ); document.write( "3*8=2*13-2 \n" ); document.write( "24=26-2 \n" ); document.write( "24=24 \n" ); document.write( " |