If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
a/15 = 78 // - 78
a/15-78 = 0
1/15*a-78 = 0 // + 78
1/15*a = 78 // : 1/15
a = 78/1/15
a = 1170
a = 1170
| 7-n-2=12 | | 2x^6+13x^4+6x^2=0 | | 3X+2(X-5)= | | 15=78 | | 72.07=c+37.42 | | 18x^2-3xy-36y^2= | | 3p+9=4p | | 1.2x=x+1.6 | | 3x^5-2x^3-8x=0 | | 4(x+3)=2(x-1) | | 3x-5(6x+7)=100 | | 7-5x=-7x+1 | | C^2+6c-216=0 | | 7x-3=3x-35 | | 3y-12x=0 | | 5x^2+14xy+8y^2= | | (3x-8)(3x+8)= | | 7-7y=(3y+2y)(y-1) | | 5x^2+31x+2=0 | | 5y-5+2y+2=180 | | 4x+8/2=6 | | 5x+10+x+16=56 | | 3x+3y=9.75 | | 3y+13+2y+2=180 | | a+15=-8 | | 3y+13+5y-5=180 | | (x+3)(4x-3)=0 | | 7x^2-3x-4-3x^2-5x+5= | | 3/11x+7/x | | y-0=4(x-7) | | 75+.1x=200+.05x | | b-10=18 |