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Question
Simplify: `8"x" - ["4y" - {"4x" + ("2x" - bar"2y - 2x")}]`
Solution
`8"x" - ["4y" - {"4x" + ("2x" - bar"2y - 2x")}]`
= 8x - [4y - {4x + (2x - 2y + 2x)}]
= 8x - [4y - {4x + (4x - 2y)}]
= 8x - [4y - {4x + 4x - 2y}]
= 8x - [4y - {4x - 4x + 2y}]
= 8x - [- 8x + 6y]
= 8x + 8x - 6y
= 16x - 6y
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