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)
3*x = 1215/5 // - 1215/5
3*x-(1215/5) = 0
3*x-243 = 0
3*x-243 = 0 // + 243
3*x = 243 // : 3
x = 243/3
x = 81
x = 81
| Logx=6.5 | | n=5n-19 | | x^4+2x^3-8x^2-16x=0 | | 7+4x=16x | | 2y=-3x+9.15 | | 4x^4-12x^3+x^2+24x-18=0 | | x*.035=8000 | | 2*45=90 | | x-0.1x=86850 | | (4-7i)(-3+6i)= | | 3[2+7(7-4)]= | | 5x-17=14x-82 | | (x-1)+(2x-2)+(3x+3)=180 | | 1*18.260*i=220.000 | | 12+x=12-3x | | 3/2w=36 | | 6x=9+15 | | 65+36x= | | 0+4y=3 | | (7x+8)+(4x+5)+(3x-1)=180 | | 7x+3y-2=3xy-8 | | -101=5-2(7r+4) | | 3x^4+2x^3+6x^2+3x+2=0 | | 8x+10=8x-8 | | -4+8(-8+5p)=-188 | | ax^2+ax+1=0 | | 3-4y+4y=3 | | (x^2-3x+1)=1 | | 5m-15=10 | | -1+19w=11w+23w | | -7+5(6x-6)=173 | | d-6=4 |