Question 258262
3{[7(x - 2) + 4] - [2(2x - 5) + 6]}
3((7x-14+4)-(4x-10+6)) innermost parentheses 1st.
3((7x-10)-(4x-4))
3(7x-10-4x+4)
3(3x-6)
9x-18
.
Ed