If it's not what You are looking for type in the equation solver your own equation and let us solve it.
p in (-oo:+oo)
(-5/4)*p = -15 // + 15
(-5/4)*p+15 = 0
15-5/4*p = 0 // - 15
-5/4*p = -15 // : -5/4
p = -15/(-5/4)
p = 12
p = 12
| X+y=8.6 | | 325.00+5.00x=3160 | | 3t-1=5t+13 | | 3x-2+x=4x-6+8x+4 | | 0.02(y-3)+0.16y=0.14y-0.01(30) | | 2(9x-33)=4-4(x+4) | | r^2-r+7=0 | | 0.20x+0.05(16-x)=0.10(14) | | 3t+1=5t+13 | | 67z-57=z-(-73) | | 3(t-1)=5t+13 | | -0.2y+3=-1.7y-1.7 | | 5x+15-4x=-7x-15+x | | 2+y=-15 | | 25x+110x+121= | | 1.5+2x=6 | | (x+3)(2x-1)=15 | | 19x+3y=180 | | 2x(3+11y)-3y=-13 | | 6x+2y=28 | | (15x-3)12=(5x+3)9 | | y^3-y^2= | | 6-(g+2)=5(3g-4) | | 2x+4=5x-2-3x | | -4x=-56+3 | | -16=3u+2 | | 35x^4y^2/10x^6y^-7 | | 2(3+11y)-3y=-13 | | 4x^2-14x+12= | | 4x+9=2x+49 | | 4x^2-14x+12=7 | | -(8y+3)-(-7y-4)=-6 |