Question

Выполни действия е)-4,3-(-8,1)=? Ж)-2/9+5/6=? З) -1 3/4-2 1/12=? Помогиттетееееее срочного

Answer 1

Ответ:

смотри фото

Пошаговое объяснение:

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Answer 2

Calculations

a) -4.3 - (-8.1) = ?

To solve this, we can use the rule that subtracting a negative number is the same as adding the positive version of that number. So, -4.3 - (-8.1) is equivalent to -4.3 + 8.1.

-4.3 + 8.1 = 3.8

Therefore, -4.3 - (-8.1) = 3.8.

b) -2/9 + 5/6 = ?

To add these fractions, we need to find a common denominator. The least common multiple of 9 and 6 is 18.

Converting both fractions to have a denominator of 18: -2/9 * 2/2 = -4/18 5/6 * 3/3 = 15/18

Now, we can add the fractions: -4/18 + 15/18 = 11/18

Therefore, -2/9 + 5/6 = 11/18.

c) -1 3/4 - 2 1/12 = ?

First, we need to convert the mixed numbers to improper fractions. -1 3/4 = -7/4 2 1/12 = 25/12

Now, we can subtract the fractions: -7/4 - 25/12

To subtract these fractions, we need to find a common denominator. The least common multiple of 4 and 12 is 12.

Converting both fractions to have a denominator of 12: -7/4 * 3/3 = -21/12 25/12

Now, we can subtract the fractions: -21/12 - 25/12 = -46/12 = -23/6

Therefore, -1 3/4 - 2 1/12 = -23/6.