Chapters

## Exercise 1

Calculate:

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5

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## Exercise 2

Calculate:

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4

## Exercise 3

Calculate:

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7

## Exercise 4

Calculate:

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7

## Exercise 5

Calculate:

## Exercise 6

Calculate:

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## Solution of exercise 1

Calculate:

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5 =

## Solution of exercise 2

Calculate:

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4

## Solution of exercise 3

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## Solution of exercise 4

Calculate:

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7

## Solution of exercise 5

Calculate:

## Solution of exercise 6

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