Question

помогите решить!!
3+(х+2)
3-(х-2)
9-(2х+5)
6х+(3х+4)
16-(х+8)
10-(4х-6)
39у-(6-2у)
23а+(7-3а)
-4,2+(3х+6,1)
-6а-(5+0,4а)
-7,2+(8х-1,9)
-7,8у-(9,3у-6)

Answer 1

Ответ:

3 + (x + 2

3 + x + 2 = x + 5

3 - (x - 2)

3 - x + 2 = 5 - x

9 - (2x + 5)

9 - 2x - 5 = 4 - 2x

6x + (3x + 4)

6x + 3x + 4 = 9x + 4

16 - (x + 8)

16 - x - 8 = 8 - x

10 - (4x - 6)

10 - 4x + 6 = 16 - 4x

39y - (6 - 2y)

39y - 6 + 2y = 41y - 6

23a + (7 - 3a)

23a + 7 - 3a = 20a + 7

- 4.2 + (3x + 6.1)

- 4.2 + 3x + 6.1 = 3x + 1.9

- 6a - (5 + 0.4a)

- 6a - 5 - 0.4a = - 6.4a - 5

- 7.2 + (8x - 1.9)

- 7.2 + 8x - 1.9 = 8x - 9.1

- 7.8y - (9.3y - 6)

- 7.8y - 9.3y + 6 = - 17.1y + 6