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## MAP Recommended Practice

### Unit 35: Lesson 12

Negative symbol as opposite

# Negative symbol as opposite

Sal explains more challenging opposites like -(-3).

## Want to join the conversation?

• isnt -|-3|= to negative 3?
• Yes, you are right -- but in the video, Sal is using parentheses to write -(-3) (which is equal to positive 3), not an absolute value symbol.
• At into the video, Sal has a chart/graph thing`.`

At the top there's two sides; a # and the word opposite`.` in the # column Sal writes a four`.` Then, he finds the opposite of four, negative four`.` He writes that in the opposite column`.` So if four's opposite is negative four, does that mean that #'s opposite is the word opposite?

Or rather, -opposite is it's opposite?
• In the video the # column is where the positive numbers go, and the opposite column is where the negative numbers go.
• finally math that makes sense
• at he explains that -|-3| when done is positive 3 but shouldn't it be -3
• You are using the absolute value bars which you give the correct answer, but Sal is not talking about absolute value, he uses parentheses such as -(-3) which is two negatives in a row and the answer is positive.
(1 vote)
• Does the first - cancel out the second - in -(-A)?
Because in some Khan questions like -(-D) will equal -D?
• -D(-D) will egal D
If you have D<0 :
Ex :
D=-4
-(-D)=D
D value will negative but D itself is positive.
-(-(-4)) = +(-4) =(-4)= -4
D is positive but value of D is negative.
• how can i find the opposite of a number that is below 0 but more than noting like forinstant 0.93 or 0.04
• The opposite of a negative number is the same number, but with an opposite sign.
Opposite of -8 = -(-8) = 8
Opposite of -2/5 = - (-2/15) = 2/5
etc.

Hope this helps.
• How do you write a fraction for number opposites
• Not sure what you are asking exactly, but fractions work as opposites just like whole numbers, so the opposite of - 1/2 is 1/2.
• some times the 1/1 gets me confused
• Think of it this way, any number divisible by itself is always 1. So 1 dived by itself would be 1.