Question

1)-3• (9- y) = 2) 5• (-12-x): 3) -9 • (a + 7) = 4) -5 • (-8 – b) : 5) - (- 0 + 12) = 6) - (7 + n) =

Answer 1

Объяснение:

1. -3(9-у)= -27+3у

2. 5(-12-х)= -60-5х

3. -9(а+7)= -9а-63

4. -5 (-8-b)=40+5b

5. -(-0+12) = -12

6. -(7+n)= -7-n

Answer 2

Sure, I can help you solve these equations step by step:

1. $-3 \cdot (9 - y)$: Distribute the -3: $= -3 \cdot 9 + 3 \cdot y$ $= -27 + 3y$

2. $5 \cdot (-12 - x)$: Distribute the 5: $= 5 \cdot -12 - 5 \cdot x$ $= -60 - 5x$

3. $-9 \cdot (a + 7)$: Distribute the -9: $= -9a - 9 \cdot 7$ $= -9a - 63$

4. $-5 \cdot (-8 - b)$: Distribute the -5: $= 5 \cdot 8 + 5 \cdot b$ $= 40 + 5b$

5. $-(-0 + 12)$: Simplify the expression within the parentheses: $= -(-12)$ $= 12$

6. $- (7 + n)$: Distribute the negative sign: $= -7 - n$

So, the simplified expressions for each equation are:

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