If it's not what You are looking for type in the equation solver your own equation and let us solve it.
n in (-oo:+oo)
2/5 = n/28 // - n/28
2/5-(n/28) = 0
2/5-1/28*n = 0 // - 2/5
-1/28*n = -2/5 // : -1/28
n = -2/5/(-1/28)
n = 56/5
n = 56/5
| 45t+36t^2= | | 2+4x=x-34 | | 2-sinx+2sinx*cosx=0 | | x^2-9=(x+c)(x+d) | | 2x(4x)= | | H(t)=-16t^2+50t+75 | | 12x-6/2 | | 3y=x^3-2 | | 1/3w-1/5=1/5w | | -4+7x=X+14 | | 10-p=40 | | 9=n/4 | | 7d+8b-3d+4b= | | 125b+12=545 | | 8a-2(9a+a)=2(-9a-5)-6 | | 96t^3+96t^2-96t=0 | | 6(-7)+24=-18 | | 4m+9=-43 | | c/6=-3 | | =x-5*X^2+3x+4 | | c/b=-3 | | log[14](x^2)+log[14](10)=2 | | 1.5*k=60 | | 6X-21=2(3X-5) | | 2/7x8 | | 2/7x8= | | X^4=5x^3 | | N-48=-32 | | 3m+m-10=180 | | 2.23-3.14x=2x-4.709 | | 6n+3n=180 | | 6^2-12/6/2 |