If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3(f=3)=-18
We move all terms to the left:
3(f-(3))=0
We multiply parentheses
3f-9=0
We move all terms containing f to the left, all other terms to the right
3f=9
f=9/3
f=3
| 11p+20=7p | | 3.5^x=27 | | 6x-15=5x+1 | | 6x–15=5x+1 | | r-72=28 | | -6b-2(1+3b)=-86 | | p+20=11p | | 10v=9+v | | 5f+10=(1/2)(20f-40) | | o/2+o/3=15 | | H=-16t^2+24t+1500 | | (10,7-x)^3=0 | | (6.3-x)*(10.7-x)^3=0 | | 6x-105/8=4x | | −x^2+5=x | | 5(2x+3/4)=20 | | 6+(r÷2)=5 | | 5r+35=-10r-10 | | 4f+3=(1/2)(2f+18) | | w÷5-4=-2 | | 16(y^2)=25 | | 0.2a+0.6+0.7a-0.2=3.1 | | 16(y^2=25 | | 7a-5=18-7 | | 20x+3=15x+13 | | 0,0000038(6,3-x)(10,7-x)^3=x^2 | | (1/2)(10x+20)=15x-10 | | H=-16t^2-29t+120 | | 3x+7=-6x-56= | | 9+5x=-17-8x= | | 4n-6(3n-4)=108 | | 3/(2x-4)=4/(x-2) |