If it's not what You are looking for type in the equation solver your own equation and let us solve it.
f(7)=84
We move all terms to the left:
f(7)-(84)=0
We add all the numbers together, and all the variables
f^7-84=0
We do not support efpression: f^7
| (x)=2x2+2 | | 7m-10=69 | | 4/x=3.2/8.7 | | 5x+9x+9=90 | | 3(3-4x)=2(5x+2) | | 15h=-9=-54 | | 5+6m-2=9m | | (9x+19)(10x+4)=180 | | 4x-15=6x+45 | | 8(6+2d)=-5 | | 2(4x+2)=-5(4x-3)-2x | | 90=(3x-10)+2x | | 9x-68=51+2x | | -3(u+7)+32=3(4-u) | | (k-7)/2=11 | | -2u+(-1)=-15 | | 3(10-x)=6 | | 2+185=5(9z-7)-8z | | -13z-5z+3z+20z=20 | | y3− 1.2=2.39 | | 10+(x+5)=2x+8 | | 15m+13=10+16m | | 7x-9=3x-77 | | X/2-x/4+7=x+7 | | 435-3x=25+x | | 26/7=350/m | | 3(h+1)-4h=-5 | | -2(x+10)=-40 | | -40+9=o=90+9 | | -2(g+4)+7g=0 | | 3+2x=7-8x | | 145=5x+2+6x |