If it's not what You are looking for type in the equation solver your own equation and let us solve it.
12.5b=100
We move all terms to the left:
12.5b-(100)=0
We move all terms containing b to the left, all other terms to the right
12.5b=100
b=100/12.5
b=8
| 2p=p+47 | | 0.3(f+3)=8 | | A+14=a+69=4a | | 13×20–15×9+20×7–6×15=x | | xx8=29 | | 9^2+9^2=c^2 | | 2c-19=11 | | ⅓(f+3)=8 | | 0.5(y-12)+4=18 | | 58+(9x-18)+(10x-12)=180 | | 9(x+2)-5=22 | | .002x+15=2 | | 4(b+5)=104 | | -2=-4+k/10 | | 7x = –56 | | -37=8+3b | | 3.46=x3.2 | | –1.4=m+–3.4 | | 2+x/18=3 | | a^2+a^2=16^2 | | 81=3*x | | -14(n+11)=42 | | 8=4b=-48 | | 13(-7-9x)+55x+63=-90 | | k5−2=2 | | -27=-5-2a | | 4(c=7) | | 9=m/3+5 | | 9=m3+5 | | 13(-7-9x)+55x+63=-93 | | p/8=7/3 | | 5.3x+1.3=7+7.3x |