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)
(2/5)*(3*x+4) = 4*(2-(3*x))+20 // - 4*(2-(3*x))+20
(2/5)*(3*x+4)-(4*(2-(3*x)))-20 = 0
(2/5)*(3*x+4)-4*(2-3*x)-20 = 0
2/5*(3*x+4)-4*(2-3*x)-20 = 0
2/5*(3*x+4)-4*(2-3*x)-20 = 0
66/5*x-20-32/5 = 0
66/5*x-132/5 = 0
66/5*x-132/5 = 0
66/5*x-132/5 = 0 // + 132/5
66/5*x = 132/5 // : 66/5
x = 132/5/66/5
x = 2
x = 2
| z^2-11z+90=0 | | -5x+10=58+x | | m/2+6=-7 | | 8m=6m+80 | | 70=5(2+4n) | | 3.4=ln(x+1) | | 2(3x-5)-5x=3+2(x-1) | | -x+7=-9+x | | 1/2-5/4=x+1/4 | | -4(x-6)-44=8-44 | | x^2+597=49x+9 | | 0.375(8x+24)+1=0.2(8x-2)+8 | | 94=2x+28 | | 6x+3(2x-1)= | | -7x+10=-x+4 | | 2k-13+k=26 | | 24x+7-27x=4-9 | | 2x+8=2squared | | 30-47=3(x-1)-5 | | 9x-1=9(x+4) | | 12-3(2t+1)=7t-3(7+t) | | 14+6x=-15 | | -3x+5=29-6 | | 8z=13-21 | | -25+5=m-1 | | -3(6y-4)=3(1-7y)+10 | | 4/3+14/3-6= | | 25=27k/4 | | -[8x+(5x+6)]=4-(8x+4) | | 127=-3+5(1-5m) | | x+8.2=15.4 | | 50=x+0.5*x+y |