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)
(9/16)*x^2-1 = 0
9/16*x^2 = 1 // : 9/16
x^2 = 16/9
x^2 = 16/9 // ^ 1/2
abs(x) = 4/3
x = 4/3 or x = -4/3
x in { 4/3, -4/3 }
| r-5=-2 | | 4=-5x-6 | | x-1/13=7/13 | | 9/16x | | 9y-6y-10=21.92 | | 1.2h=-4.8 | | 4y-10=-3 | | 75.25/0.25 | | -2-(3(-2)+7)=11 | | 5z^2-20=0 | | -6m=4 | | a+8=3 | | f(x)=x^4+6x^5+x^4+7x^3+2041 | | -1=7+m | | y/3-6=2 | | y^2+9y+14y=0 | | 8+h=9 | | 8x+17=9x+10 | | (N+15)/6 | | -4+q=-4 | | 8.84/3.4 | | (h+4)(h+3)(h)-126=0 | | 3x^2=-81 | | -4f=30-f | | 8(x+4)-5x= | | F/6-3=4 | | 4-(5x-3)= | | 11-1/3x=-1 | | 15.6/13 | | 4-(5x-8)= | | 4-(5x-2)= | | 11-1/3=-1 |