Question

упростите выражения

12*а*5*2
4b*15*7
9(х+6)
6(4х-3)

Answer 1

12*а*5*2=10*12*а=120а
4b*15*7=60b*7=42b
9(х+6)=9х+54
6(4х-3)=24х-18