Question 667597
Simplify means expand, right? That means that the main operation will be addition and/or subtraction. Namely, get rid of the multiplication, remembering order of operations.

(2t+4)3+6(-5)-(-8)

(You can pretend there's a -1 in front of the eight to help you see how the negative sign affects it.)

= 6t+12-30+8

= 6t - 10 (combining like terms)