If it's not what You are looking for type in the equation solver your own equation and let us solve it.
b in (-oo:+oo)
(1/2)*(b-3) = 2.5 // - 2.5
(1/2)*(b-3)-2.5 = 0
1/2*(b-3)-2.5 = 0
1/2*(b-3)-2.5 = 0
1/2*b-4 = 0
1/2*b-4 = 0
1/2*b-4 = 0 // + 4
1/2*b = 4 // : 1/2
b = 4/1/2
b = 8
b = 8
| 65.1=x-31.2 | | -(2/7)*(3x) | | 17x-12y=-16 | | k-(-19)=15 | | 32 = s5+ 28 | | 4(2x)-3=21x+27 | | [(2x^5z^-2)/(4x^-1z^4)]^3 | | 10x-6x+12=12x-24-32x | | 3x-5/6=5/3 | | 6=-13+n | | 3*2/15 | | 2.253(4x+3.3)-0.8=42.6829 | | -(2/7)*(7/10) | | 8(3v-1)=-36-4v | | -2/7*7/10 | | log^9(1)=log^9(1-4x) | | 3(2/15) | | (2x^5z^-2/4x^-1z^4)^3 | | 1+m=-5 | | 2+-3n=4 | | 3x=15/6 | | -7(8-3m)-5=35+5m | | 1/6x3/5x20 | | 18=17+5x | | 4(1/2-3y)-3y=0 | | .5x+2(.75x-1)=.25+6 | | 2+-3=4n | | 91=-3x+4(-2x-2) | | y=2x+(-12) | | 2r+23.5=53.7 | | (2*32-y)=13 | | X^2-y^2-4x+4y=0 |