If it's not what You are looking for type in the equation solver your own equation and let us solve it.
z in (-oo:+oo)
(1/4)*(12*z-28) = 15 // - 15
(1/4)*(12*z-28)-15 = 0
1/4*(12*z-28)-15 = 0
1/4*(12*z-28)-15 = 0
3*z-22 = 0
3*z-22 = 0
3*z-22 = 0 // + 22
3*z = 22 // : 3
z = 22/3
z = 22/3
| 9k-2=-20 | | x+1*2x=x+5 | | 7a^2+9=457 | | -2/3m=-14 | | 2X=-4X+24 | | 2(-9y-1)+4y=5 | | 10=2x+26 | | 16-11/4 | | 4h-2=22 | | -5c+5-7c=-127 | | 4y+7=3 | | 3x+8y-7=0 | | 4x^2+3x=22 | | 2x=10*2 | | 7+3w=5w+1 | | 6x^2+33x-24=0 | | -8+14a=7a | | 16+1/2y=-30 | | 1/1*7/2 | | 297+5c=15c-3 | | 1/6y=1/3 | | 4/5w=2 | | n-3/8=1/6 | | 4m+9-6m+3y-2= | | x=4x-35 | | a+2a-1= | | 2/3=1/8+b | | x^2+6=-4x^2+2 | | 297+5c=15-3 | | .5x+2=.016x-1 | | 15x^2+5x=0 | | b+3.17=-3.17 |