10z-4+8(z-1)

10z - 4 + 8z - 8 = 18z - 12

10z - 4 + 8z - 8

18z - 12

To simplify the expression 10z-4+8(z-1), we can use the distributive property and then combine like terms.

First, apply the distributive property by multiplying 8 to both terms inside the parentheses:

8(z-1) = 8z - 8

Now the expression becomes:

10z - 4 + 8z - 8

Next, combine like terms by adding the coefficients of z.

(10z + 8z) - 4 - 8 = 18z - 12

Therefore, the simplified expression is 18z - 12.