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)
7*(10-(2*x)) = 168 // - 168
7*(10-(2*x))-168 = 0
7*(10-2*x)-168 = 0
7*(10-2*x)-168 = 0
-14*x-98 = 0
-14*x-98 = 0
-14*x-98 = 0 // + 98
-14*x = 98 // : -14
x = 98/(-14)
x = -7
x = -7
| 7(6-6d)=-252 | | 4(2n-6)=16 | | 2(-2+6w)=-4 | | 3/5(t+18)=3(2-t) | | 5(-6b+5)=-5 | | 3(-6-2a)=-30 | | 5(4m-5)=155 | | 6(-1a+8)=-24 | | 5(6d+8)=130 | | 5z+3=12 | | 3+4=13 | | x^4-6x^3+13x^2-10x=0 | | 5(7t+4)=125 | | 6(8+7d)=342 | | 5y+y=0 | | 4(-5-7w)=-104 | | 2z^3-200z=0 | | 4(-1m+9)=-8 | | 4(-5t-9)=64 | | 3(-6b+6)=216 | | 4(7+7w)=84 | | 3(-4a+9)=27 | | 6(4k+5)=294 | | 2x^4+8x^3=0 | | 2(-4+6n)=-8 | | 6(2b+9)=186 | | 5(1n+2)=40 | | 7(-6-3w)=-42 | | 6(9+2d)=6 | | (s-4/9)(-2/3)=-4/5 | | 7(-4-6b)=392 | | 5(10-4k)=90 |