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)
(1/3)*n = 7 // - 7
(1/3)*n-7 = 0
1/3*n-7 = 0 // + 7
1/3*n = 7 // : 1/3
n = 7/1/3
n = 21
n = 21
| y=3/4(9/2) | | 12-2m=-2 | | 0.13t-3.4=0.08t-0.4 | | X^2=(X-3)(2x-8) | | -9(-8)=64--8 | | 8x+6y=60-6y | | 4x+4=-68 | | X-2.16=-6.5 | | a(2b)+b(2c)+c=14 | | y=(x+7)(x-3) | | 0.50x+0.25(30)=33.5 | | an+2=-14n | | 7y/15*3/5y | | 9/10x4/9 | | 4(t-5)+4th=4(2t+3)-9 | | 3(39.95+x)=143.7 | | X-2.16=-6.15 | | 16(25-y)+9y=102 | | -29.8=4+2.6z | | -28.50+36.75=0.75x | | -(4y+4)-(-3y-8)=1 | | -3(2x-4)=36 | | 4.5=.75x | | 4m+5m= | | 3x-6-2x=2x-6-3x | | 48a^2+24a+3=0 | | 5=3x-1-6 | | -65x(-67-r)=-520 | | 20-d=15 | | 10b^2-3000=0 | | (x-3)(x+3)x-x+3=-5(x-3)(x+3) | | 8c+1=3 |