If it's not what You are looking for type in the equation solver your own equation and let us solve it.
v in (-oo:+oo)
(1/5)*v+(3/10)*v = 0
1/2*v = 0 // : 1/2
v = 0
v = 0
| s^2-2s=35 | | -3.1x-3.62=-18.5 | | 4(5x-3)=6(9x+7) | | 3/8x+2/3y=10 | | 9.37x-16.47x= | | -4t-4=36 | | 4d=144 | | -3/5(248) | | 10(6x+5)=x | | y=-3x-10 | | -6y+4.4+0.6y+4.8y+2= | | 2/3y+3=29 | | a/7-7/8=-25/56 | | 8+a=17 | | 2(194-6x)=100(3-x) | | 9.6/1.2 | | 8(x+4y)-2(x-8y)= | | -15*-4+6*4=a | | -5/7+22=-48 | | 8-3c=-(c-5)-8 | | (2+j)x+(5-3j)y=3-j | | 8-3c=-c-5-8 | | a7/a3 | | ac=5x+3 | | |x+8|=6 | | 4(4468.09)=17872.34 | | 4.39x-1.54=1.93x+22.814 | | 1/4(b+1)=2 | | x=-x^4+7x^3-9x^2-3x+10 | | -7^2+32/8 | | -3(3y-8)+2(2y+9)= | | 5.1x-9.4=-0.22 |