7th grade math please helppp :(

hi. i have difficulty figuring out these problems for my HW. can you pleas help? 10 POINTSS! :)

1. 10 + z/ -3 z=?

2. 18= -d+12 d = ?

3. 3.4 = 13.6 + (-3.4c) + 1.7c c=?

4. 2x-5y = 10


5. 6p/8 +13 = -5

you don't have to solve this one because its bonus, but if you can help explain it to me that would be much appricated

| -x -4 + 6y | i think you have to find the absolute value


THANKS SOOOO MUCH IN ADVANCE!!!! :D

1) 10+z/-3=0
z/-3 = -10
z = -30

2) 18 = -d+12
-d = 6 d = -6

3) 3.4 = 13.6 + (-3.4c) + 1.7c
3.4 = 13.6 - 1.7c
-10.2 = -1.7c
c = 102/17 c = 6

4) 2x-5y = 10 plug 0 into both to get opposite answer
2(0)-5y = 10 y = -2
2x-5(0) = 10 x = 5

5) 6p/8 + 13 = -5
6p/8 = -18
6p = -144 multiplied both sides by 8 to get rid of the fraction
p = -24

6) l -x -4 +6y l
l -x +6y = 4 l x=4 y=2/3
not sure if this one is right but i think this is how to do it

1. 10 + z/ -3 z=?

Something is missing.........Sorry

I CAME BACK TO THIS ONE..........I wonder

10=z/(-3)...............mult by -3

-30=z

2. 18= -d+12 d = ?
-6=-d

6=d

3. 3.4 = 13.6 + (-3.4c) + 1.7c c=?
-10.2=-1.7c

c=10.2/1.7

c=102/17

c=6

4. 2x-5y = 10
WILL ASSUME
2x-5X=10

-3x=10

x=-10/3

5. 6p/8 +13 = -5

3p/4=-8...................mult by 4

3p=-32

p=-32/3

you don't have to solve this one because its bonus, but if you can help explain it to me that would be much appricated

| -x -4 + 6y | i think you have to find the absolute value
THERE is nothing to solve

IF someone tells you the answer is

x+4+6y THEY ARE INCORRECT

I have a MASTER OF SCIENCE degree from Un of NOTRE DAME and 43 years teaching experience(started when I was young)