Question

12×(a+b) 5*(8+a) (x+Y)*15 7*(x-9) a*(x-y)

Answer 1

Ответ:

.........,...........

Answer 2

Ответ:

12а +12b

40 + 5a

15x+15y

6x - 63

ax - ay

Answer 3

To simplify the given expressions, let's expand and simplify each one:

1. 12 × (a + b) Applying the distributive property: = 12 × a + 12 × b Simplifying: = 12a + 12b

2. 5 × (8 + a) Applying the distributive property: = 5 × 8 + 5 × a Simplifying: = 40 + 5a

3. (x + Y) × 15 Applying the distributive property: = 15 × x + 15 × Y Simplifying: = 15x + 15Y

4. 7 × (x - 9) Applying the distributive property: = 7 × x - 7 × 9 Simplifying: = 7x - 63

5. a × (x - y) Applying the distributive property: = a × x - a × y Simplifying: = ax - ay

So, the simplified expressions are:

1. 12a + 12b
2. 40 + 5a
3. 15x + 15Y
4. 7x - 63
5. ax - ay