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)
(3/10)*x = 3 // - 3
(3/10)*x-3 = 0
3/10*x-3 = 0 // + 3
3/10*x = 3 // : 3/10
x = 3/3/10
x = 10
x = 10
| d/4=-14 | | 7-(4t)=4t-14-21t | | (3n-4)(n+1)=0 | | 2cos^2x-4cosx=6-sin^2x | | 2x+2=2y-3x+2 | | x/(2/9)=6 | | 2y-4x-5=0 | | 5=1/7(6x-7) | | 1.2x+4=7x-6 | | -48-2x+8x=102 | | 10.99(x+38.79)=60.77 | | 15n+15=7n+28 | | 343^(1/3) | | -4///9f=-3 | | 6-4p=-2(p-3) | | 8x+93=-3x+9 | | 9x*2=34+3x | | 5(-2)-s+(-2)=-18 | | r/5-6=3 | | -3+8(4+6b)=29+3b | | 0.03X+0.04Y= | | 504x+423y=9 | | 45t+0.25t=70+0.15t | | 0.4y=-2 | | 150y=.25+32 | | b-o-o-b+4=7 | | 150y=-25+32 | | 8x-12=9x | | 8(2m+1)=8+16m | | 4/2/7 | | 40-(2x)=8 | | 4x-3=-8x+9 |