720 : ( a x 2 + a x 3 ) = 6
a x 2 + a x 3 = 720 : 6 = 120
a x 5 = 120
a = 120 : 5 = 24
720 :( a x 2 +a x3) = 2 x3
=> 720 : ( a x 5 ) = 6
=> ax5 = 720 :6
=> a x 5 = 120
=> a = 120 :5
=> a = 24
≧◉◡◉≦
720 :( a x 2 +a x3) = 2 x3
720:( a x 2 + a x 3)=6
720:( a x 5 ) =6
a x 5 = 720:6
a x 5 = 120
a = 120:5
a = 24