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*(x+2))/5 = 12 // - 12
(10*(x+2))/5-12 = 0
(10*(x+2))/5+(-12*5)/5 = 0
10*(x+2)-12*5 = 0
10*x-40 = 0
(10*x-40)/5 = 0
(10*x-40)/5 = 0 // * 5
10*x-40 = 0
10*x-40 = 0 // + 40
10*x = 40 // : 10
x = 40/10
x = 4
x = 4
| 3x+4b=2 | | 1/5(x-200)=575 | | 4x/3-2=2x | | 1/5(x-200)=160 | | 90-(3x+4)=2x+6 | | x^3-3*x-7=0 | | x^3-x^2+25x-150=0 | | 4x^2-7x=4 | | 950x+1000x=7800 | | 2x+3=7x-15 | | 30x^7-24x^3/-6x^7 | | 5-2(2x+1)=5-2(x+2)+4 | | Y=-x^2-6x-5 | | 14/9k+13/9-2k+2/9+2/9k-6 | | x^2+8x+15=I | | -4(x+3)=12 | | 6y-10y^2=0 | | 5x+6=14+3x | | 10x+8=6x+34 | | 8x-6(4x-5)=36 | | 14*(y-4)/10*(y-4) | | 8x=28x+140 | | 2x^2-8-x^2-x-2-4x+3=0 | | 8(x-2)+3(x+9)=0 | | 3x-11+7x=-8 | | 3+2(x+3)=3*(x-4)+2 | | 3x^2-26x=2x | | d/3+1=d/4 | | 4+9y-7y=-15+5 | | d/2+1=d/4 | | 3*0+y=-5 | | 3*(a-2b)/(a+b) |