If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a+8.3=20.5
We move all terms to the left:
a+8.3-(20.5)=0
We add all the numbers together, and all the variables
a-12.2=0
We move all terms containing a to the left, all other terms to the right
a=12.2
| 30+x=89 | | 3(x+1)-1=3(x-4) | | 90=(3x+2)+(x+12) | | 2.7x-13.49=4.6 | | c=23=68 | | 5y+3+3y+7=12y-10 | | -6(1-x)=-20-x | | 3.3x-17.32=7.1 | | 9x+4x+10+9=180 | | -11-5x=2(3x+11) | | 24-10x=4 | | 1000/5=x/12 | | 17=-2x+3+4x | | -6m+5m=5-2m | | -16-3p=6p-p | | x=x+2x | | -5x+26=4(x-7) | | 97=7+-5z | | (9x-4)(7x+6)=0 | | 9(q-99)=-9 | | 9x+22=23 | | 5(7x-10)-6(2x+3)=70 | | 3x+5+2x-5=65 | | 1-7x=13-5x | | 28-2.2b=11/6b-54.8 | | 2x-14=46 | | 80-7h=60-2h | | 7(x*x)=2 | | 7x^2=2 | | 1.2(x+4.1)=8.3 | | 70h=20-2h | | 70h=20+2h |