Question

1)-5,4а × 10b × 1/9с=2) 8m-5p-13m-p=3) r-(17-r)+(-r+30)4)-6(4+a)+8(a-6)​

Answer 1

Ответ:

1) -6ab

--------

c

2) -5m - 6p

3) -17r -r² -r + 30

-18r - r² + 30

4) -24 - 6a + 8a - 48

-72 + 2a.

Пошаговое объяснение:

всё уже в ответе

Answer 2

Let's simplify each of the expressions:

1. -5 * 4a * 10b * (1/9c) = -5 * 4 * 10 * (1/9) * a * b * (1/c) = -20 * (10/9) * (a * b/c)

2. 8m - 5p - 13m - p = (8m - 13m) - (5p + p) = -5m - 6p

3. r - (17 - r) + (-r + 30) = r - 17 + r - r + 30 = r + r - r - r - 17 + 30 = 2r - 17 + 30 = 2r + 13

4. -6(4 + a) + 8(a - 6) = -6 * 4 - 6 * a + 8 * a - 8 * 6 = -24 - 6a + 8a - 48 = (8a - 6a) + (-24 - 48) = 2a - 72

So, the simplified expressions are:

1. -20(10/9)(a * b/c)
2. -5m - 6p
3. 2r + 13
4. 2a - 72