Will someone do my algebra homework? offer of doing hw back!!!!

A=2/5b-3 & a=2b-18
C=3d-26 & 4d+10c=120
M=4n+11 & -6n+8m=36
T=0.2s+10 & 4s+5t=35
0.5+0.25y=36 & y+18=16x
PLEASEE I NEED HELP THE LESSON IS SOLVING SYSTEMS USING SUBSTITUTION
i need it for tomorrow and until 7:20 am if u do it and correct I will do your English homework for a week!
I need STEP BY STEP
Thanks so much

(1) a=2/5b - 3 ..........(i)
a=2b - 18...........(ii)
Substitute a = 2b - 18 into (i)
2b - 18 = 2/5b - 3
Multiply by 5
10b - 90 = 2b - 15
8b = 75
b = 75/8
substitute in (ii)
a =2 x 75/8 - 18
a = 150/8 -18
a =3/4
check in (i)
a=2/5b - 3 ..........(i)
3/4 = 2/5 x 75/8 -3 yes

2)
c=3d-26..............(i)
4d+10c=120........(ii)
subtitute c =3d -26 in (ii)
4d + 10(3d -26) =120
4d + 30d -260 =120
34d = 380
d = 380/34
substitute d = 380/34 in (i)
c=3 x 380/34 -26..............(i)
c = 128/17
check in (ii)
4d+10c=120........(ii)
4 x 380/34 + 10 x 128/17 = 120 yes

you can do the rest
M=4n+11 & -6n+8m=36
T=0.2s+10 & 4s+5t=35
0.5+0.25y=36 & y+18=16x

if you offer to do someone elses homework in return, why not just do your own?