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Well, let's imagine numbers as friends playing on a see-saw. When we add 74 and 13 together, it's like lifting one friend higher on the see-saw, making the total 87. Then, when we subtract 13 from 87, it's like bringing that friend back down to the same level as the other, which gives us back our original number of 74. It's all about balancing the numbers, just like friends on a see-saw!

Q: What operation does 74 plus 13 equals 87 and 87-13 equals 74 demonstarte?

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Addition=^^=

Addend plus addend equals sum Minuend minus subtrahend equals difference Multiplicand times multiplier equals product Dividend divided by divisor equals quotient

http://authors.library.caltech.edu/25030/7/05_Calc1_Chapter2w.pdf visit.

If: d+7 = 5 Then: d = -2 by subtracting 7 from both sides

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Addition=^^=

When you are counting in base 4. Or possibly when the "plus" operation is defined in an unusual manner.

23 plus 16 plus 16 equals 55. This is an addition equation and addition is a math operation that represents the total sum of objects in a collection.

Addend plus addend equals sum Minuend minus subtrahend equals difference Multiplicand times multiplier equals product Dividend divided by divisor equals quotient

2048

http://authors.library.caltech.edu/25030/7/05_Calc1_Chapter2w.pdf visit.

If: d+7 = 5 Then: d = -2 by subtracting 7 from both sides

42