If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X in (-oo:+oo)
X/(-2) = -15 // + 15
X/(-2)+15 = 0
15-1/2*X = 0 // - 15
-1/2*X = -15 // : -1/2
X = -15/(-1/2)
X = 30
X = 30
| 54/f=-7 | | 8.7=10x+1.9 | | 1/8x-5=(-3/8x) | | (-5x+3)=12 | | 11(t-6)+7t=6(3t+4)-10 | | 2x^2+0x-4=0 | | 36y^8/36y^2 | | 5m-3m+6-2m= | | 3m-5= | | 9(x+1)=23+x | | 4x-20=2x-15+x+25 | | 5.2x+7-2.2x=10 | | 569.7844=2*3.14*4.3*4.3+2*3.14*4.3*h | | -5x-10=2-(x+1) | | 2-1/3n=69 | | -7w-5=w+35 | | 9x-12=8x-4+25 | | -3(2s-3)-9=-2(9s+9)-3 | | 15=4.3n+2.1(n+4) | | 0.7x+0.4=-1.7 | | 0.7+0.4=-1.7 | | (-4+5)+(4d+3)= | | x^2+x=184 | | -19-7a=8(-4a+7) | | 6(x-8.9)=1.2 | | 3234.1372=2*3.14*r^2+2*3.14*r*100.2 | | 25c^2-40c+16= | | 6-5-2= | | b=32x-1+12x-1y | | -9x-2=14 | | 7x+9.66=4x+15 | | r/4=2250 |