If it's not what You are looking for type in the equation solver your own equation and let us solve it.
w in (-oo:+oo)
5*(-4*w-8) = -280 // + 280
5*(-4*w-8)+280 = 0
5*(-4*w-8)+280 = 0
240-20*w = 0
240-20*w = 0
240-20*w = 0 // - 240
-20*w = -240 // : -20
w = -240/(-20)
w = 12
w = 12
| 6(9+4n)=318 | | 3(5+6k)=177 | | 7(-9+n)=-119 | | 6G+5=29 | | (2x-5)/4=5+(x/12) | | 6(3t-4)=-6 | | 5(7+2t)=45 | | 2(5w+3)=106 | | 2(-4+6x)=112 | | 7(10+4t)=238 | | 4x^4-20x^2+25=0 | | 2*.2*.6= | | (3k+4)62=5 | | x^2+25x=150 | | k-3-7=10 | | -8u-7+5u=29 | | 7(10+3t)=133 | | 2(5n-1)=48 | | 3(1t+1)=21 | | 2(5+4d)=82 | | x^2=-14x-12 | | (4x)2+42x=0 | | 18=396 | | 2(4-4a)=-48 | | 6(-4+a)=-24 | | (2x-5)/7=5+(x/12) | | x+3/x=2 | | 3(5+6a)=-129 | | 6(9+7k)=180 | | 5(2w+1)=-55 | | 3(2w+1)=69 | | 2(6d+1)=86 |