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Sagot :
You start by distributing the negative sign to the terms inside the parentheses.
2x - {3y - [5x - (7y - 6x) ] +1} = 2x - {3y - [5x - 7y + 6x ] +1}
Then distribute the negative sign to the terms inside the brackets
2x - {3y - [5x - 7y + 6x ] +1} = 2x - {3y - 5x + 7y - 6x +1}
Finally, you distribute the negative sign to terms inside the curly brackets.
But I'll leave that to you. After doing that, you combine like terms and simplify.
2x - {3y - [5x - (7y - 6x) ] +1} = 2x - {3y - [5x - 7y + 6x ] +1}
Then distribute the negative sign to the terms inside the brackets
2x - {3y - [5x - 7y + 6x ] +1} = 2x - {3y - 5x + 7y - 6x +1}
Finally, you distribute the negative sign to terms inside the curly brackets.
But I'll leave that to you. After doing that, you combine like terms and simplify.
(7y-6x)
[5x-(7y-6x)] = 11x - 7y
{3y-[5x-(7y-6x)+1} = 10y - 11x +1
2x -{3y - [5x - (7y - 6x)] +1} = 13x -10y -1
[5x-(7y-6x)] = 11x - 7y
{3y-[5x-(7y-6x)+1} = 10y - 11x +1
2x -{3y - [5x - (7y - 6x)] +1} = 13x -10y -1
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