#### Answer

-9x+6

#### Work Step by Step

3[7x-2(5x-1)]
First use the distributive property on the parentheses.
3[7x-2(5x)-2(-1)]
Then multiply inside the brackets.
3[7x-10x+2]
Then combine like terms inside the brackets.
3[-3x+2]
Then use the distributive property on the brackets.
3(-3x)+3(2)
-9x+6