If it's not what You are looking for type in the equation solver your own equation and let us solve it.
y in (-oo:+oo)
(15-y)/3 = 3 // - 3
(15-y)/3-3 = 0
(15-y)/3+(-3*3)/3 = 0
15-y-3*3 = 0
6-y = 0
(6-y)/3 = 0
(6-y)/3 = 0 // * 3
6-y = 0
6-y = 0 // - 6
-y = -6 // * -1
y = 6
y = 6
| 28-b+6=-3b+24 | | 9(8+8x)=9(6x+2) | | 2(t+4)=16 | | 2(k-13)-10=2 | | 5x+10=5x+12 | | 5-(x-8)=11(x+9) | | X^2+90x+1=0 | | 9(4x+7)=9(9x+2) | | 2x-76=36+6x | | 21x-88=0 | | 5x+2+15y+8+6x-8=360 | | 4(x-2)=2times+2 | | 6x+90=-7x+100 | | 3h+4-4= | | 22=x/3-17 | | z/8-8=2 | | 3(5x-2)=27 | | 10x+40=15+42x | | Y=18+0.50x | | 2x+12=-28-8 | | 2x+4=8x+2.5 | | 7m+6m=34 | | (5/3)-(3/7) | | (-8x+7)-(2x-4)=-21x-121 | | 6a+12-7=3a-10 | | x+72+72=180 | | 6a+12-7=3a+10 | | 3x+7+1x+13=180 | | 2/5x-8= | | 2x+4=8x+2.4 | | 3.5/1-3 | | 5(6x-9)=125 |