Question

найдите значение выражения: 15 (а5+в3) при а=13, в=0,2

Answer 1

15*(1/3/5 + 1/5/3) = 15*(5/3 + 3/5) = 15* (34/15) = 34

Answer 2

1/3*1/5+1/5*1/3=1/15+1/15=2/15 => 15*2/15=2

Answer 3

15*2/15=2