If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x+0.28x=31200
We move all terms to the left:
x+0.28x-(31200)=0
We add all the numbers together, and all the variables
1.28x-31200=0
We move all terms containing x to the left, all other terms to the right
1.28x=31200
x=31200/1.28
x=24375
| x^2+7x-5=-17 | | 2x(x+0.2)=0 | | 4.7=x-10.1 | | x+1.1=13.9 | | w+3=3.6 | | 2x+12=18- | | .75x=44571 | | -36=14d | | 10+4.9t+-4.9t^2=0 | | -7x=-X+30 | | 100x+(9000-100x)=9000 | | -5(n-4)-2=6 | | 34=b-7 | | e+3=12 | | 3x+1=1.5x+4 | | -1.5=0.6w+0.3 | | 7-t=1 | | -2c+43=43 | | 25=d+16 | | n^2+12n+23=3 | | -6c+26=48 | | 6c+36=-48 | | q+11=18 | | -6a-12=90 | | t-5=65 | | 3(3-x)=x+1 | | 10x-9x+1=5-4 | | -23x-20=95 | | -21+c/11=-14 | | 32b=11/ | | 11-7x=-8x+19 | | 15-8h2-2h=0 |