Given 85 – [12x – 7(8x – 3) – 2{10x – 5(2 – 4x)}]
First we have to remove the parentheses, then remove braces, and then the square brackets.
Then we get,
= 85 – [12x – 7(8x – 3) – 2{10x – 5(2 – 4x)}]
= 85 – [12x – 56x + 21 – 2{10x – 10 + 20x}]
= 85 – [12x – 56x + 21 – 2{30x – 10}]
= 85 – [12x – 56x + 21 – 60x + 20]
= 85 – [12x – 116x + 41]
= 85 – [- 104x + 41]
On simplifying, we get
= 85 + 104x – 41
= 44 + 104x
