If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
a/(-5) = 6 // - 6
a/(-5)-6 = 0
-1/5*a-6 = 0 // + 6
-1/5*a = 6 // : -1/5
a = 6/(-1/5)
a = -30
a = -30
| 3y^2-13y+10=0 | | 3x+18=4x-10 | | (3x-4)+(5x+6)=90 | | 5(2x-9)-3=5(x-4)-18 | | 166.15x=180(x-2) | | 16x^2+40x-1.5=0 | | 6(t-2)-76=-42 | | 6x-3-9x=9x-12x-6 | | 135x=180(x-2) | | 2(2x-1)=x-17 | | 9x-3=7x+19 | | 39+.4x=1.4y | | x(12x+11)=-2 | | 9-3x-10=7x-14 | | 18/-11x | | a^2+a^4+1=0 | | (3x+7)-(6x+5)= | | -15+7x+1=3-8c-8 | | -.33(15x-9y)= | | 7h+56=126 | | 12h^2+5k-3=0 | | 5x-4(x+6)=45-85 | | n(-7)=49 | | y+10=2(x-4) | | x-2/4-1=x-9/5 | | 6x+2=3x-6 | | 8x-y=-22 | | -9-b+8b=-39 | | 3p-8=2(p-8)-3p | | (3x+6)+(8x+7)=90 | | 30-v=238 | | 7/15=623/x |