One step equation
x - 7
x=19
3x+5=20
x=5
lxl=7
case 1: 7 and case 2: -7
y+9=4
y=-5
2(n-4) =10
n=9
lx-3l=5
case 1: 2 case 2: -8
5m=35
m=7
5x-3=2x+9
x=4
RT= D solve for R
R= D/T
p/3 - 6
p=-18
5x-8= 3x+12
x=10
I =PRT solve for R
R=I/PT
-8k = -56
k=7
3(x+2) =3x+6
infinitely many solutions
l2x-4l+3=11
case 1: x=6 case 2: x=-2