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)
(21*n)/56 = 10/56 // - 10/56
(21*n)/56-(10/56) = 0
(21*n)/56-5/28 = 0
3/8*n-5/28 = 0 // + 5/28
3/8*n = 5/28 // : 3/8
n = 5/28/3/8
n = 10/21
n = 10/21
| 6/25=1/5x | | 3/8n-4/7=3/14 | | -16+3y=-6 | | -16+3y=6 | | t(4t+1)(t-2)=0 | | x*0.7=14 | | 4y-7+5y-7= | | x*0/7=14 | | 7(d+3)-5d=d-8 | | x-23+4x=-39-4x-46 | | 24-4x=5x+4 | | -(4x-10)+4(6x+7)= | | -23=4x+4 | | -2+17=m-2 | | 2(x-2)-10= | | 9(2x-9.5)=16.5+8x | | 5t-8/-7=t/5 | | 7-4y=-28 | | 5x-15=3x+4 | | 6x^2+0.1x=0.09 | | 22=15+q-4 | | 7-5=2 | | X=8t^2-3 | | 2n+7n+4n-7= | | 0=-16t^2-7t+35 | | 5/6m-t=9b | | 9*2-8y=-72 | | 5x-1=10x-21 | | 4(x-3)-20= | | 9*2-8y=72 | | -8x+x^2=-15 | | (2a-b)-(2b-a)= |