Question

1) -3 · (9 – y) = 2) 5. (-12 – x) = 3) –9 · (a + 7) = 4) -5. (-8-b) = 5) -(-c+12) = 6) - (7 + n) =​

Answer 1

1. -27+3y
2. -60-x
3. -9a-63
4. 40+5b
5. c-12
6. -7-n

минус на минус - плюс
минус на плюс - минус
плюс на минус - минус
плюс на плюс - плюс

Answer 2

Let's solve each of these equations step by step:

1. -3(9 - y)

First, distribute the -3 into the parentheses:

-3 * 9 + 3y

Now, simplify the multiplication:

-27 + 3y

2. 5(-12 - x)

Again, distribute the 5 into the parentheses:

-60 - 5x

3. -9(a + 7)

Distribute the -9 into the parentheses:

-9a - 63

4. -5(-8 - b)

Distribute the -5 into the parentheses:

40 + 5b

5. -(-c + 12)

When you have a double negative, it becomes positive:

c - 12

6. -(7 + n)

Distribute the negative sign into the parentheses:

-7 - n

So, the simplified expressions for each equation are:

1. -27 + 3y
2. -60 - 5x
3. -9a - 63
4. 40 + 5b
5. c - 12
6. -7 - n