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)
N/21 = 27 // - 27
N/21-27 = 0
1/21*N-27 = 0 // + 27
1/21*N = 27 // : 1/21
N = 27/1/21
N = 567
N = 567
| y=13(9x-27) | | -14=-12u | | 6x+2(x-17)=544 | | -2u-8=-10u | | 7x=-3x | | 2(50-20)+1.5+20=90 | | 3x+8=-32 | | 4(y+1)+8=16 | | -37+2x=-3x-2(-8x+2) | | -2c=6-c | | 3x+2(5x-5)=120 | | 4.2-8+10-12= | | -13x-15=-11x-7 | | ln(5x)-ln(x)=7 | | f(x)=ln(4x-1) | | -5f=-4f-7 | | 3x-(-8)=-32 | | H/15=24 | | Solvex-13=-4x+17 | | 12.5+0.4m=14.75+0.25m | | -h+15=11 | | 20x^4-68x^3+24x^2=0 | | -3y+3=6 | | 4x-2y+7+4x-3y= | | 7(8/35x-1/7) | | 17x-18=19x-30 | | -13r=195 | | 2v^2+11+5= | | 3x+14-3=7 | | x+25=2x-20 | | 5x+6(3x-14)=192 | | 4d+9=-8d-13 |