<PRE><B>Question 227737</B>
4{3[5(y-3)+9]+2(y+8)} ... Start with the given expression.



4{3[5y-15+9]+2y+16} ... Distribute.



4{3[5y-6]+2y+16} ... Combine like terms.



4{15y-18+2y+16} ... Distribute again.



4{17y-2} ... Combine like terms.



68y-8 ... Distribute for the final time.



So 4{3[5(y-3)+9]+2(y+8)}=68y-8



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