If it's not what You are looking for type in the equation solver your own equation and let us solve it.
f in (-oo:+oo)
39 = (5/9)*(f-32) // - (5/9)*(f-32)
39-((5/9)*(f-32)) = 0
(-5/9)*(f-32)+39 = 0
39-5/9*(f-32) = 0
39-5/9*(f-32) = 0
511/9-5/9*f = 0
511/9-5/9*f = 0
511/9-5/9*f = 0 // - 511/9
-5/9*f = -511/9 // : -5/9
f = -511/9/(-5/9)
f = 511/5
f = 511/5
| L=2(45.5+5) | | X+[x+1]+[x+2]+[x+3]=18 | | 9i(2-2i)= | | 9i(2-2i)= | | y=3x+6-12 | | 190=2(x+5)+(x-2)+(x) | | 12/25=x/50 | | b+9=-18 | | x/2=14/35 | | c+13=-17 | | (-5+4i)(5+I)= | | 2/15=x/50 | | y+13=-19 | | y-3+y-4=7 | | b-(-20)=-19 | | 21x-12=30 | | 7i-(11-5i)= | | b-(-12)=-20 | | Y=3powerx+2 | | -3=5-2d | | 6x-4(2/7+2)=-24 | | 6/7=x/42 | | 3.5x+42.9=-17.9-9.0 | | 1/2(x-3)2+4 | | 3(2x^2+x-6)=4(x^2-x-6) | | 121x^2-256=0 | | 3/4y-1/4y=5 | | 12-3/-3 | | 5x+3y+5=80 | | 3(2x-3)+(x-5)= | | 100+8h=10h | | -3(t-2)+8t=7t-1 |