Question

-0.8x*(-7-3t+1.2p)
-a*(-b-4.2d+3c)
-12*(5/6x+1/4y-5/24z-1.1)

Answer 1

$-a*(-b-4.2d+3c)=ab+4.2ad-3ac$

$-12*( frac{5}{6}x + frac{1}{4} y- frac{5}{24} z-1.1)=-10x-3y+2.5z+13.2$