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Subtracting a negative = adding a positive | Adding and subtracting...
Logic tells us (as does this video) that subtracting a negative number is the same thing as adding the absolute value of that number. ... two negitives equal a positive ... .. If a = 2 and b = -2 and we plot those points on a number line then subtract b ... . like adding 3 and -1 plus 3 is 2. while -3 minus -1 is -2 because -3plus 1 is ... |
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Math Forum: Ask Dr. Math FAQ: Negative Times a Negative
Why does a negative times a negative equal a positive? ... Minus times minus results in a plus, ... positive number multiplied by -1, then we can always write the product of two negative numbers this way: ... 3 x -3 = -9 2 x -3 = -6 1 x -3 = -3 0 x - 3 = 0 -1 x -3 = 3 ... x = ab + (-a)[ (b) + (-b) ] (factor out -a) = ab + (-a)(0) = ab + ... |
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Quick MathSpeak Tutorial - MathSpeak™ Website
Example 1. the equation 3 plus 4 cross-multiplied by 2 minus negative 2 equals 3plus. brief. 3 plus 4 cross 2 minus minus 2 equals 3 plus 8 plus 2 equals 1 3 ... Example 4. the variable a plus the fraction with b in the numerator and c plus d in ... |
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Add and subtract signed numbers - A complete course in algebra
How to subtract a negative number. ... Therefore, when we "add" a negative number, we must get less -- it means to ... Note that we use parentheses -- a + (−b ) -- to separate ... 1 + (−2) + 3 + (−4) = 1 − 2 + 3 − 4. ... . But −(−b) is equal to +b. |
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Does a negative plus a positive equal a negative - Answers.com
Yes, a negative plus a positive equals a negative IF the positive number is less
than the ... In the problem -4 + 3 = -1, subtract by solving the problem 4 - 3 = 1. ...
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Match each system of linear equations with the ... - OpenStudy
Answer two y plus sixteen equals negative three x... y minus one forth x equals ... plus y equals five x Read Answer Items for Question 14 Answer A. Two B. Four ... |
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Subtracting Positive and Negative Numbers | WyzAnt Resources
Example 1: Don't let all this talk of positive and negative numbers throw you off track—if you see a ... 5 – 3 = 2. Rule 2: Subtracting a positive number from a negative ... (minus) sign followed by a negative sign, turn the two signs into a plus sign. |
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Does 1+2+3… Really Equal -1/12? | Roots of Unity, Scientific ...
One example of a convergent series is 1/2+1/4+1/8+1/16… ... a bunch of positive numbers to sum up to a negative number if the audience assumes that “sum” means ... .. {S (3) – 4 S(3)} = S(2). but S(2) = 1/4 ( proved above @ B ) ... . Isn't this the same as saying infinity times one plus infinity times minus one? |