3x[8x- {5x+2-(7x-9x)}]
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3x[8x - {5x + 2 - (7x - 9x)}]
First we have to solve the bracket ()
=> 3x[8x - {5x + 2 + 2x}]
Now, we have to solve the bracket {}
=> 3x[8x - 7x - 2]
In last we have to solve the bracket []
=> 3x (x - 2)
=> 3x^2 -6x ✔✔
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