Question

1)7-x+y+x+y 2)3a-a-b-12b-7 3)1,8y+3-2,8c-0,2-2y

Answer 1

Ответ:

7-2(x+y)

2a-13b-7

2.8(1-c)-0.2y

Пошаговое объяснение:

Answer 2

Let's simplify the given expressions:

1. 7 - x + y + x + y

Combine like terms:

= 7 + 2y

The simplified expression is 7 + 2y.

2. 3a - a - b - 12b - 7

Combine like terms:

= (3a - a) + (-b - 12b) - 7

= 2a - 13b - 7

The simplified expression is 2a - 13b - 7.

3. 1.8y + 3 - 2.8c - 0.2 - 2y

Combine like terms:

= (1.8y - 2y) + (3 - 0.2) - 2.8c

= -0.2y + 2.8 - 2.8c

The simplified expression is -0.2y + 2.8 - 2.8c.