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)
5-((1/2)*(x+3)) = 66 // - 66
5-((1/2)*(x+3))-66 = 0
(-1/2)*(x+3)-66+5 = 0
5-1/2*(x+3)-66 = 0
5-1/2*(x+3)-66 = 0
5-1/2*x-135/2 = 0
-1/2*x-125/2 = 0
-1/2*x-125/2 = 0
-1/2*x-125/2 = 0 // + 125/2
-1/2*x = 125/2 // : -1/2
x = 125/2/(-1/2)
x = -125
x = -125
| -4x+19x=30 | | -4x+19x=39 | | -4y+1=-5y+8 | | 99x+24=1.49x | | (3x+2y)(3x-2y)=0 | | 7n+11=24+3n | | 7p+8=17+6p | | 19-9-220=1 | | 2-3x-7=x | | 3.9x-4=2.9x | | 3/8x-3=9 | | 7(-1+3x)=35 | | 7x-(-5)=-23 | | 40-7m=6(-4m-5)+3m | | 5(x-3)+4x=7(3-x) | | 5/8x+3/5=x | | x^2+14x+49=6 | | -20-(2x+10)=60 | | 3/8-3=9 | | lnx+ln(x+8)=9 | | 21n+10=31 | | (-12)+2/4-1/2=(-12)-3/3 | | 5(-10r+10)=6r+50 | | 3[2+v]=5v+16 | | 12+2/4-1/2=12-3/3 | | 5x-7y=21fory | | 5x+19=8+8(6x-4) | | 8-y/15=6 | | 5=t+14 | | 5x+15=8x-3 | | 2x^2-x-30=0 | | 8(-2x+5)+7=-6x-43 |