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/4 = 7.5 // - 7.5
n/4-7.5 = 0
1/4*n-7.5 = 0 // + 7.5
1/4*n = 7.5 // : 1/4
n = 7.5/1/4
n = 30
n = 30
| 4x-25=41 | | (1+z)(5z-3)=0 | | 8x^2+16x-20= | | -13n+12.95=-14.9n-18.21 | | 3.2y=-.456 | | 5x+62=73+2x | | 7x+x=30 | | 7g-10=18 | | -9=28w | | X^2+12x+y^2-10y+8=0 | | -15.01-7.88+5.6w=7.7w+17.64 | | 11vsquared-60v-99=0 | | -8/-5x=96 | | 6x+3=x+7+8 | | 2v/v-2 | | 3(6x+2)-2(5x+3)=0 | | Q=3x+5xc | | -d=41 | | cos^2+5cos-6=0 | | 9-p/4=5 | | -17.6s=-17.2s+6.96 | | 2x-2+9x+3=57 | | 8.7k-17.71=11.54-13.8k | | (5xy^2/x^5y)^-2 | | 3b^2+10b+3=0 | | 6q+q+3q-2q-5q=15 | | 8x-10=276 | | b=20+3-a | | 3n^2+10n+8=0 | | 3(1/3)-(5/6) | | 2s+15s+3s+-3s+-20=14 | | ydx-(y^2-x^2)dy=0 |