6(x + 4)+1
To simplify this, first, you want to get rid of the parenthesis.
To do that, use the distributive property, and distribute the 6 to everything inside the parenthesis, by multiplying it to everything inside the parenthesis.
So:
6(x + 4) + 1 -> 6 * x + 6 * 4 + 1
Then just multiply.
6x + 24 + 1
Then simplify.
6x + 25
5 + 8 (3 + x)
Again, do the same thing, and use the distributive property to distribute 8 to 3 and x.
5 + 8 * 3 + 8 * x
5 + 24 + 8x
29 + 8x