If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-9f=666
We move all terms to the left:
-9f-(666)=0
We move all terms containing f to the left, all other terms to the right
-9f=666
f=666/-9
f=-74
| 166=45-b | | 10x+20x(x+3)=90 | | g/11=-25 | | X+3+20x=90 | | 9y-5=14y+45 | | 3w+3=24-2w | | 6x+7-4x=8x+6 | | 12x+3-11x=-14 | | 6(x-7)=15-9(1-2x) | | 72-7x=6x-6 | | 4-5x=3x+29 | | (2x+3)+(51)+(100)=180 | | 266=q-(-161) | | 3x+2x-3=6x-9 | | X2-12x+6=0 | | 7.17x(x/3)+3(2x/3)=18(6/3) | | z-67=-55 | | (2x+3)+(51)(+(100)=180 | | 4y/3+3y=3 | | g-(-12)=85 | | 600=-15(7x+23) | | 7(2y-5=10-7 | | k+23=92 | | -32=-4x+8(x-3) | | 0.12(0.06)=s | | 3x-2.7=5x+4.1 | | 100/f=1 | | 2(4x+7)=12x-1 | | 6n-2n=44 | | X+2x+40=90 | | 5x-4x-9=12 | | m+0.25=1.54 |