Question

Раскройте скобки : 

1.2•(5-x-y)=...

2.(-3)•(a+10-b)=...

3.7•(x-1+y)=...

4.(-15)•(c-d-3)=...

5.4•(a-b+8)=...

6.(-12)•(-x-y+2)=...

 

Answer 1

1) 10 - 2x - 2y

2) -3a - 30 + 3b

3) 7x - 7 + 7y

4) -15c + 15d + 45

5) 4a - 4b + 32

6) 12x +12y - 24

 

 

 

 

 

 

 

 

 

 

Answer 2

1) 2*5-2*х-2*у=10-2х-2у

2) (-3а)-30+3b

3) 7x-7+7y

4)(-15c)+15d+45

5) 4a-4b+32

6)12x+12y-24