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)
10^7-x = 5/4 // - 5/4
10^7-x-(5/4) = 0
10^7-x-5/4 = 0
39999995/4-x = 0 // - 39999995/4
-x = -39999995/4 // * -1
x = 39999995/4
x = 39999995/4
| 3y-5=82 | | 3n-10=35 | | 2x/8=6x/8 | | 17-5= | | 2-25/36 | | 0.3x=4 | | 2x+x=102 | | a=9(7-2) | | 16-x=x+3-1 | | P^2/3-6p^1/3+9=0 | | y+17=90 | | 45+x+0.5+2x=150 | | 2b+8=80 | | 20=4x(x+3) | | 5a-3(a+6)=2(a-9) | | 16.5r=36.5 | | x-3/2-2=x-8/3 | | -4.2y=-210 | | 4-2x=2x | | (8x-1)(x-8)=0 | | p=4a+b+5 | | 6-10h-8= | | x+(x+8)=18 | | 8.32=4.1z+10.5 | | Y+1/8=14 | | 3/32a=3/4 | | -2(6x-7)=-12-14 | | -2x-2y=3 | | 0.5(r-2)=-r-2 | | 2(v+1)+3=11 | | C+3c+3c/2+4c-2=169 | | 4(3x-12)=12(x-12) |