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)
(3/4)*x-3 = 0
3/4*x-3 = 0 // + 3
3/4*x = 3 // : 3/4
x = 3/3/4
x = 4
x = 4
| 5lx+4l=10 | | 14=4x+3-1 | | 9/16m=36 | | -2(9n+10)-9n=2-9(11+3n) | | -s^2+3s-28=0 | | (5x^2)/x^2 | | -3.7b=10.3b+7 | | 33-16+6a=53 | | v/3=10 | | 48/7*7/8 | | 4x+7+5x-18+2z=360 | | 30-20=5m | | 48/7*7:8 | | 18/1000 | | .49782/.031= | | 4(2x-3)=7-5(6x+2) | | ln(2.5/x)=0.002 | | 1=r/12 | | 307*60.42= | | ln2.5/x=0.002 | | 7=4-y-y | | 256.35-115.36-75.96= | | 1/2(12x-4)=4 | | 1.20x+4y=144 | | 8.637+492+.003+.1= | | 2(b+3)+4=25+7b | | 1.20y+4y=144 | | -1+a=.5 | | 2x^2-60x+400=0 | | 21x^2+7=52x | | D*219=369 | | 12/20 |