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)
(2/7)*(4*N-18) = 12 // - 12
(2/7)*(4*N-18)-12 = 0
2/7*(4*N-18)-12 = 0
2/7*(4*N-18)-12 = 0
8/7*N-120/7 = 0
8/7*N-120/7 = 0
8/7*N-120/7 = 0 // + 120/7
8/7*N = 120/7 // : 8/7
N = 120/7/8/7
N = 15
N = 15
| 0.3x=3.9 | | 1/3(5-8)=5 | | 56/4=x | | 1/3(5x-8)=5 | | 4t+14=-3+7 | | 5xy+8= | | 360-2x-x-145-110x= | | -19/38x-16/32x-45/90x= | | -x^2=13x-42 | | 3(3-1)+(-3)*3-5= | | -5x-5=-65 | | -5+3m=m | | b+8+4b=33 | | a=bx/c | | 4/3*3.14*2*2*2 | | 2x+10=x+54 | | 9pq-3qr= | | 7x+60=12x | | 1=x+25 | | an=-2+3(n-1) | | 196s=1/4 | | V32-1/5.125.2/3 | | 2=3x-9 | | 17-3x=11x-7 | | 4x+3-3=-6 | | 4-9l-b-6l=-14 | | 6r+5r=77 | | 3-7x-10x+2= | | -2-(-5)+(-4)= | | 6(x+3)=3+6x | | 5+6x(11-4)= | | 2*3.14*r=7.86 |