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)
7*n-(3/4) = -115/4 // + -115/4
7*n-(3/4)-(-115/4) = 0
7*n-3/4+115/4 = 0
7*n+28 = 0 // - 28
7*n = -28 // : 7
n = -28/7
n = -4
n = -4
| 7-4b=-9 | | 9-5m=-26 | | -1/2b+9=25/2 | | 1/3x-7/10=-71/30 | | -2/7d-5/9=-5/9 | | -9+5/7t=-123/14 | | 7t-3=4 | | 1/2w+1/4=25/4 | | 6k+9/10=69/10 | | -6m+10=43/4 | | 2/3+7m=-145/3 | | 5/6x+5=365/72 | | 1/2t-8/9=37/9 | | -2/7t+5=199/42 | | 5b+4/9=544/9 | | 5+2/3x=47/9 | | -5/7m+8=46/7 | | 2(x-4)=41-5x | | 2/3t-1=5 | | 2/7-2/3b=76/21 | | -1+4m=-3 | | 2/3b+10=344/33 | | 1/4x+2/3=73/132 | | 3/4-2/3w=7/36 | | -7a+1/9=-314/9 | | 4x-8=100-8x | | -7n-4=17 | | 10-3/5m=538/55 | | 7x+10=66 | | -3/5+6w=-33/5 | | 2/3m+1=11/3 | | 5w-3/10=-503/10 |