If it's not what You are looking for type in the equation solver your own equation and let us solve it.
1.200e=250
We move all terms to the left:
1.200e-(250)=0
We move all terms containing e to the left, all other terms to the right
1.200e=250
e=250/1.200
e=208+0.40000000000001/1.200
| (6x−15)=90 | | 71-4c=59 | | x−(6x−15)=90 | | 45-21=2x | | 8+6h=44 | | 12-(n+11)=-5 | | 7+5e=52 | | 7+5e=72 | | k+14=22 | | 1/2345=56543792/67328491342n | | 21h=1 | | 3x-(2x-1)=7x-(3-5x)+(x+24) | | 2+5n=60 | | 6a=24-2a | | 3(30+g)=4(g+19) | | 3/5n=20/9 | | -2.75x^2+450x-3000=0 | | 3/5n=22/9 | | 1j=15 | | w-5/4+w+5/5=11/10 | | 155w+375=900 | | 17=3h+2 | | 155w-375=900 | | 2(a-3)+6=-8 | | 6x+12÷2x+4=x-7÷2x+4 | | 10x+4=6=56 | | 9(u-2)=6u-21 | | y=6(2y-1)+3(3y+2) | | d-5.6/3=4.1 | | 9x-81=63 | | X+4=10x+15 | | 4e-9=-1.8 |