If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x(1-0.2)=1800
We move all terms to the left:
x(1-0.2)-(1800)=0
We add all the numbers together, and all the variables
x(0.8)-1800=0
We multiply parentheses
0.8x-1800=0
We move all terms containing x to the left, all other terms to the right
0.8x=1800
x=1800/0.8
x=2250
| 55x+24=7x+6(4+8x) | | w-441=279 | | 2k=42 | | 2.5=1/2(2x+1)(2x-3) | | 15x–15–15x=32 | | 7x^{2}+4x-8=14 | | 4/3s-3=s+2/3-1/3=s | | x^2=17.64 | | 6y-10=8y-8 | | 7-3y=51 | | 2d+5d=2d+2d | | 4+2x=1+7x | | 18*3x+3=3x(20) | | 3g/4-9=4(g-1) | | 1/3x1/3x1/3=x | | -4-4(6y-12)=-2y | | -7/4v=-14 | | 3x-8=2(x-4)x=5 | | 5,1-x=8x+17 | | -4=-2x^2+8x-10 | | -3=-x^2+7x-13 | | 13x-20-3x=30X3 | | 5x+15=4x+11 | | 3b+11=13b-9 | | 13x-20-3x=30.3 | | 7g/12=4.2 | | c/4/7=18/20 | | x^2=18.75 | | x2=18.75 | | 4c.8c=4 | | 3x-5=35x | | 40-y=26 |