6(3x-5)+2(3x-5)-8(3x-5)

To simplify the expression 6(3x-5) + 2(3x-5) - 8(3x-5), we can distribute the constants in front of each set of parentheses:

6(3x) - 6(5) + 2(3x) - 2(5) - 8(3x) + 8(5)

Next, we simplify each term:

= 18x - 30 + 6x - 10 - 24x + 40

Now, we can combine like terms:

= (18x + 6x - 24x) + (-30 - 10 + 40)

= 0x + 0

= 0