Question

упростить выражение. 2/3а * 7/12 b

Answer 1

2/3a * 7/12b = 7/18ab 
  

Answer 2

= ( 2*7 )ab / ( 3*12 ) = 7ab/ ( 3*6 ) = 7/18ab

Answer 3

2/3а*7/12б=(2/3*7/12)аб=1/14аб