You can
put this solution on YOUR website!According to distributive property a(b+c-d) = ab + ac - ad
Similarly
-2u(3v-4w-3x)
is simplified to
3v *(-2u) - 4w*(-2u) -3x*(-2u)
-6uv +8uw + 6xu
( I have used * to denote multiplication)
note that -4 * -2 = +8; and -2*-3 = +6 )
Hope this helps!