-4(7b+3)+24b-8

Let's simplify the expression step by step:

-4(7b+3) can be solved by distributing the -4 to both terms inside the parentheses:

-4 * 7b = -28b
-4 * 3 = -12

Therefore, -4(7b+3) = -28b - 12.

Now we have the expression -28b - 12 + 24b - 8.

Combining like terms, we can add the -28b and 24b, as well as the -12 and -8:

-28b + 24b = -4b
-12 - 8 = -20

Therefore, -4(7b+3) + 24b - 8 simplifies to -4b - 20.