If it's not what You are looking for type in the equation solver your own equation and let us solve it.
u in (-oo:+oo)
4 = 13*u-(-7/(-8)) // - 13*u-(-7/(-8))
4-(13*u)-7/(-8) = 0
4-13*u-7/(-8) = 0
39/8-13*u = 0 // - 39/8
-13*u = -39/8 // : -13
u = -39/8/(-13)
u = 3/8
u = 3/8
| 28+28=12+9+x | | 5*n/4=3 | | 6x^3-7x^2+4x-15=0 | | 3(-8+n)=-30 | | 96=5x+6(-2x+2) | | -2(x-9)=12 | | 4b+3(b-1)=11 | | 7+8q=10+7q | | 4(3+x)=88 | | 6k-2=18 | | 88=49(3+x) | | B/3+13=11 | | 6x^2=28 | | 24+42+35-48= | | M/10-1=-3 | | -7=-5+P/9 | | 7c-10=4 | | 1/4x2=25 | | -2=x/2+3 | | 4(3m+5)=-2(m-2) | | 7n^2-41n-54=2 | | -4x-8=-4-5x | | -5(-r-3)=-2r-8(4+5r) | | 62=3x+5(x+6) | | 14-3/4j=-8 | | d/(-4)+3=15 | | 4(x+7)-4=56 | | -2(4+6)=r | | -53=-6r+7 | | 13x-2(x+4)=18x+1 | | 20.00-k=12.50 | | x+-4+2=14 |