Question

Help me pls before the teacher notices

Answer 1

How to Get Answer for Number 9:

3+5n = 1+8n+2

5n+3=(8n)+(1+2)(Combine Like Terms)

5n+3=8n+3

Step 2: Subtract 8n from both sides.

5n+3−8n= 8n+3−8n

−3n+3=3

−3n+3−3=3−3

−3n=0

Answer: n = 0

`(-3n)/(-3) =(0)/(-3)`

10.

5x + 12 − 4x = 4x + 6 − 4x

x + 12 = 6

x + 12 − 12 = 6 − 12

Answer: x = −6

11. Answer is also x = 0

(More answers will come as edited)

Answer 2

9)
`3 + 5n = 1 + 8n + 2` | subtract 5 on both sides, and solve 8n and -5n

`3 = 1 + 3n + 2` | combine like terms, add 2 and 1

`3 = 3n + 3` | subtract 3 on both sides, and solve 3 and -3

`0 = 3n` | divide by 3n

`0 = n` | final answer

10)
`5x + 12 = 4x + 6` | subtract 4x on both sides, solve -4x and 5x

`x + 12 = 6` | subtract 12 on both sides, solve -12 and 6

`x = -6` | final answer

11)
`-8x - 4 = 7 (-2 - 4x) + 4x` | distribute 7 into the parentheses

`-8x - 4 = -14 - 28x + 4x` | combine like terms

`-8x - 4 = -14 - 24x` | add 8x on both sides, and solve 8x and -24x

`-4 = -14 - 16x` | add -14 on both sides, and solve 14 and -4

`10 = -16x` | divide by -16 on both sides, and solve

`-0.625 = x` | final answer

12)
`16 - 2n = - 8 + 4 (n - 3)` | distribute 4 into the parentheses

`16 - 2n = -8 + 4n - 12` | combine like terms

`16 - 2n = 4n - 4` | add 2n on both sides, and solve 2n and 4n

`16 = 6n - 4` | add 4 on both sides, and solve 4 and 16

`20 = 6n` | divide by 6 on both sides, and solve

`3.33333 = n` | final answer (repeated)

13)
`-6 (3 - 6r) = -18 + 4r` | distribute -6 into the parentheses

`-18 + 36r = -18 + 4r` | subtract 4r on both sides, solve 36r and -4r

`-18 + 32r = -18` | add -18 on both sides, solve -18 and 18

`32r = 0` | divide by 32 on both sides, and solve.

`r = 0` | final answer

14)
`4 (3b - 1) = 9 - b` | distribute 4 into the parentheses

`12b - 4 = 9 - b` | add -b on both sides, solbe 12 and b

`13b - 4 = 9` | add -4 on both sides, solve 9 and 4

`13b = 13` | divide 13 on both sides, solve

`b = 1` | final answer

15)
`-6x + 7 (1 - x) = -4 (x - 4)` | distribute 7 into parentheses

`-6x + 7 - x = -4 (x - 4)` | distribute -4 into the parentheses

`-6x + 7 - x = -4x + 16` | combine like terms

`-5x + 7 = -4x + 16` | add -4x on both sides, solve -5x and 4x

`-x + 7 = 16` | subtract 7 on both sides, solve 16 and -7

`-x = 9` | divide by -1 on both sides, solve

`x = -9` | final answer

16)
`5 - (8v + 5) = -4 (1 + 3v)` | distribute the - and -4 into the parentheses

`5 - 8v - 5 = -4 - 12v` | combine like terms

`10 + 8v = -4 - 12v` | add 12v on both sides, solve 12v and 8v

`10 + 20v = -4` | subtract 10 on both sides, solve -4 and -10

`20v = - 14` | divide 20 on both sides, and solve

`v = -0.7` | final answer

17)
`-8 (4 + 4n) = 8 (n + 6)` | distribute -8 and 8 into the parentheses

`-32 - 32n = 8n + 48` | add -32n to both sides, solve 32n and 8n

`-32 = 40n + 48` | subtract 48 on both sides, solve -32 and -48

`-80 = 40n` | divide -80 on both sides, and solve

`-2 = n` | final answer

UNDER CONSTRUCTION (I WILL EDIT WHILE YOU RECIEVE THE ANSWERS)