1) 4g+5=37 => 4g=32 => g=8
2)c/6=5 => x=6*5=> x=30
3)(f+4)/5=3 => f+4=15 => f=11
4)5(b+6)=30 => b+6=6 => b=0
5)5(a-5)=60 => a-5=12 => a=17
6)5(e+2)=45 => e+2=9 =>e=7
7)3(d-5)=12 => d-5=4=> d=9
8)4(m-4)=16 => m-4=4 => m=8
9)5(q+6)=30 => q+6=6 =>q=0
10) h/3+7=6 => h/3=1 => h=3
11)3c+5=3 => 3c=-2 => c= -2/3
12)x/3+7=6 => x/3= -1 => x=-3
13)6p-1=2 => 6p=3 => p=3/6=1/2
14)3(2d-7)=27 => 2d-7=9 => 2d=16 => d=8
15)2(b-3)=5 => b-3=2,5 => b=5,5
16)3(y-1)=1 => y-1=1/3 => y=4/3
17)5v+3=9 => 5v=6 => v= 6/5
18)(n-3)/6=3 => n-3=18 => n=21
19)(t+10)/4=1 => t+10=4 => t= -6
20)(3c+4)/3=5 => 3c+4=15 => 3c=11 => c=11/3
Hope that helps.
Good luck!! ^^