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you turn everything inside the prenthises positive or negative

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Q: How do you remove parentheses preceded by a positive sign and a negative sign?
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What is negative one minus two?

2-(-1)= 2+1= 3 When a parenthesis is preceded by a minus sign, remove the parentheses and the minus sign before the parentheses and change the sign of each term within the parentheses. When a parenthesis (-1) is preceded by a minus sign, -(-1) remove the parentheses ( ) and the - sign before the parentheses and change the sign of each term -1 within the parentheses +1


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You change the sign of each of the terms inside the parentheses. For example:- (a - b + c)becomes:-a + b - c


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A "+" before parentheses means + 1 times everything inside, so +(a+b-c) means +a+b-c


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What do you do when there is a negative sign in front of the parentheses?

Remove the parentheses and change the sign of everything that was within them. Eg: 25 - ( 6 + 4 - 8 + 2) ( which is 25 - (4)) becomes 25 - 6 - 4 + 8 - 2 = 21


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When you remove the parentheses are the signs of the terms in the second parentheses opposites?

When you have a minus sign in front, to remove parentheses each of the terms inside the parentheses changes sign. Example:a - (b - c + d) = a - b + c - d