Math and Arithmetic

What is 10 plus 9 plus 1 minus 1 plus 2 minus 2 plus 3 minus 1 plus 4 minus 4?

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2017-05-25 11:39:34
2017-05-25 11:39:34

21

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2017-05-25 11:10:46
2017-05-25 11:10:46

It is 21.

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2017-05-25 09:58:40
2017-05-25 09:58:40

(10+9)+(1โˆ’1)+(2โˆ’2)+(3โˆ’1)+(4โˆ’4) = 21

This is the same equation rewritten: (10+9)+(3โˆ’1) = 21
This can be done as 1-1, 2-2, 4-4 cancel themselves out.

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Related Questions


In addition and subtraction, if the plus sign is larger than the minus sign, then it's a plus. For example: +10 minus -20 = -10 If the plus sign is smaller than the minus sign, the answer will be a minus. For example: -10 minus + 20 = -10 In multiplication, if you have 2 plus signs, the answer will be a plus sign. If you have 2 minus signs, the answer will be a plus sign then, too. But if you have a plus and a minus sign, then the answer will be a minus. For example: +5 x + 2 = +10 -5 x - 2 = +10 -5 x +2 = -10

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