Question

9​{[4​(y-4​)+18​]-​[2​(5y-2​)-1​]}

Simplify

Answer 1

`-54y+63`

Explanation:

`9\{[4(y-4)+18]-[2(5y-2)-1]\}`

Simplifying the innermost parenthesis by distribution and simplifying.

`9\{[4y-16+18]-[10y-4-1]\}`

`9\{[4y+2]-[10y-5]\}`

Now, reversing the signs of the terms inside brackets coming after negative sign to remove the brackets.

`9\{4y+2-10y+5\}`

Combining like terms

`9\{-6y+7\}`

Using distribution to remove the braces.

`-54y+63`