Question

A)4/19+17/18-4/19 b) -7/5*23/29*(-5/7) please help me !

Answer 1

a)

Ответ:

4/19 + 17/18 - 4/19 = 17/18

Пошаговое объяснение:
1) Сократить противоположные выражения

2) Избавится от 0
Ответ: 17/18

Где вы видите это / - это дробь

b) -7/5 * 23/29 * ( -5/7 ) = 23/29

Ответ:

23/29

1) Вычислить и сократить дробь

Answer 2

To solve the expression A) 4/19 + 17/18 - 4/19 + b, we can simplify it step by step.

First, let's combine the fractions with the same denominator: 4/19 + 17/18 - 4/19 = (4 + 17 - 4)/19 = 17/19.

So the expression becomes 17/19 + b.

Next, let's solve the expression B) -7/5 * 23/29 * (-5/7).

To multiply fractions, we multiply the numerators together and the denominators together: (-7/5) * (23/29) * (-5/7) = (-7 * 23 * -5) / (5 * 29 * 7) = 805 / 1015.

So the expression becomes 805/1015.

Now, let's put it all together:

A) 4/19 + 17/18 - 4/19 + b = 17/19 + b.

B) -7/5 * 23/29 * (-5/7) = 805/1015.

Please note that the values of b and the expressions A) and B) are independent of each other. If you have a specific value for b, you can substitute it into the expression 17/19 + b to get the final result.

I hope this helps! Let me know if you have any further questions.