document.write( "Question 159250: If 7 x's = 2 y's and 3 y's =5 z's then 21 x's = ___z's \n" ); document.write( "
Algebra.Com's Answer #117411 by t_as87(5)![]() ![]() ![]() You can put this solution on YOUR website! If 7 x = 2 y (multiply both sides by 3) \n" ); document.write( "you get 21 x = 6 y \n" ); document.write( "and since 3 y = 5 z (multiply both sides by 2) \n" ); document.write( "you get 6 y = 10 z \n" ); document.write( "SO \n" ); document.write( "21 x = 10 z! \n" ); document.write( " |