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)
(3/7)*n = 12 // - 12
(3/7)*n-12 = 0
3/7*n-12 = 0 // + 12
3/7*n = 12 // : 3/7
n = 12/3/7
n = 28
n = 28
| 15+6y=3y | | 5/6y=20 | | -1.2x+2.7y=9.9 | | -30y=240 | | 5x^2+6x-13=0 | | m-14=18 | | 20/6=m/27 | | t/8=196/14 | | t/8=400/20 | | 20/12=70/t | | 8/2=32/t | | 7/6=14/t | | x=9y+100 | | n/12=4/8 | | x=9y-100 | | 72y=36 | | 9x+4y=11 | | 3x-12y+21z= | | 70=(2x)2+x | | 70=(2x)2+x/2 | | [8(x+5)-19]+[3(x-2)+3]= | | 35=(2x)2+x/2 | | 35=2x*2+x/2 | | 35=x*2+x/2 | | [9(p+5)-19]+[3(p-3)+3]= | | 1[4-9(1-7)]= | | [2-3(8-3)]= | | 9q^2+8pq-9q-8p= | | 0.6(8x+16)=1.2-(x+2) | | 104-(5x+15)=5(x+9)+x | | 1/5y-2/3y | | w/5+7=-4 |