tolong ya.. kerjain.. thanks

5. 4 x (-3)a x 2b = -12a x 2b = -24ab(b)
6. 5pq x (-4p) x (-2pr) = -20p²q x (-2pr)
=40p³qr(d)
7.2k x 3L x (-kL) x (-3km)=6kL x 3k²Lm
=18k³L²m(d)

Terimakasih