If it's not what You are looking for type in the equation solver your own equation and let us solve it.
t in (-oo:+oo)
(2/3)*t-((1/2)*(7-t)) = 0
(-1/2)*(7-t)+(2/3)*t = 0
(2*t)/3-1/2*(7-t) = 0
(-1/2*3*(7-t))/3+(2*t)/3 = 0
2*t-1/2*3*(7-t) = 0
7/2*t-21/2 = 0
(7/2*t-21/2)/3 = 0
(7/2*t-21/2)/3 = 0 // * 3
7/2*t-21/2 = 0
7/2*t-21/2 = 0 // + 21/2
7/2*t = 21/2 // : 7/2
t = 21/2/7/2
t = 3
t = 3
| 100*1/20^2 | | -X+2=3x-10 | | s-1.75=0.02 | | x+22=-18 | | 2x+11=-18 | | -15/9p=-8 | | (2x+3)+(2x-3)=(8x+6)(x-1)+22 | | 7/12x=49 | | 4a^3-2a^2+3a-1=0 | | 5x+20=5x+30 | | h=5f+3 | | r+20=34-4r | | 5+7/6=12 | | m^5-5n^2= | | 8+7/9=11 | | -50+1x=0.80(x-100) | | 125-2x=34x+21 | | 800=x+24 | | -a^3-100a=0 | | 3w^2+6=-11w | | 3w^2+6=11w | | 2.4x+1.35=3.75x+13.5 | | 2.4x+1.35=3.75x*13.5 | | f(x)=x^2+2x+6 | | -20/4 | | 8x+16(10-x)=200 | | 2+6/3=7 | | 5x+9-4X=14 | | 3x^4=375x | | b/3+3=7 | | 4w^5(2-6w^4)= | | 7x+4y=9 |