If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
A = (9/7)*(H-90) // - (9/7)*(H-90)
A-((9/7)*(H-90)) = 0
(-9/7)*(H-90)+A = 0
A-9/7*(H-90) = 0
A-9/7*(H-90) = 0
A-9/7*H+810/7 = 0
A-9/7*H+810/7 = 0
x belongs to the empty set
| 5/14c=1/2 | | 34x=2 | | 13+u/9=67 | | 9(-7+y)+2y=11 | | r/2=10 | | c/3=-3 | | 2x+15=100 | | 0.08y=-56 | | 6x+8=-14-8x | | 3/8W-22=-9/8W+4 | | 5.00/3.00x=23.00 | | f/4=-1 | | 1/4g=4 | | 3/7q=3/8 | | 0.7x^2=104x+0.7 | | (15-5y)+3y=9 | | 2/5+5x=22/5 | | (3/x)-(1/3)=(1/2x) | | x*(5/9*98)=(20*5/9)*98 | | 4x^2-x+14=10 | | (h/d^2)/(h^2/d^3)=0 | | 0.4v=16 | | 8n-22=3(3n+11)-6n | | 5x+25y=75 | | 5x+25y = 75 | | h/d^2/h^2/d^3=0 | | -8+7x-4x=-20 | | 5x+25y =75 | | X+1/3=16 | | 1p+7=-1+3p | | 4b^4+8b^8/2b^-2 | | (6+2w)w=216 |