Question

11. 7b + (4b - 6)

12. 8d2 + (6d2 - 4d)

13. (5x2 + 4) + (-3x2 - 4)

14. [-4x + (10 - 5x)] + 5x

15. 8 + [5 + (6 + x)]

16.

+3c - 7d

- 2c + 5d

- c + 8d

+4c - 6d

17.

3a + 8b - 5c

6a - 9b + 4c

-7a + b + 2c

18.

+6p - 3q + z

- 3p + 2q - z

- p + 00q___

Answer 1

Answer: 2a + c is the answer for #17 and #18 is 2p.

17.

3a + 8b - 5c

6a - 9b + 4c

-7a + b + 2c =

2a + c

18.

+6p - 3q + z

- 3p + 2q - z

- p + q =

2p

Explanation:

Answer 2

Answer: 11.
`11b-6`

12.
`14d^2-4d`

13.
`2x^2`

14.
`-4x+10`

15.
`19+x`

16.
`4c` (all together, the problems aren't entered correctly)

17. Nothing further can be done with these equations. Please check the expression entered.

18.
`2p-q` (All together, the problems aren't entered correctly)

Explanation:

11.

`\quad \:a+\left(b+c\right)=a+b+c`

`7b+\left(4b-6\right)=7b+4b-6`

`=7b+4b-6`

`7b+4b=11b`

`=11b-6`

12.

`2d*(7d-2)=14d^2-4d`

`(8 * (d^2)) + ((2*3d^2) - 4d)`

`2^3d^2 + (6d^2 - 4d)`

`14d^2 - 4d = 2d * (7d - 2)`

13.

`((5*(x^2))+4)+((0-3x^2)-4)`

`(5x^2 + 4) + (-3x^2 - 4)`

`=2x^2`

14.

`-4x+10-5x+5x`

`-4x-5x+5x+10`

`-4x-5x+5x=-4x`

`=-4x+10`

15.

`8+5+6+x`

`\:8+5+6=19`

`=19+x`