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t in (-oo:+oo)
(-8/9)*(3*t+5) = (2/3)*t-12 // - (2/3)*t-12
(-8/9)*(3*t+5)-((2/3)*t)+12 = 0
(-8/9)*(3*t+5)+(-2/3)*t+12 = 0
(-2*t)/3-8/9*(3*t+5)+12 = 0
(-8/9*3*(3*t+5))/3+(-2*t)/3+(3*12)/3 = 0
3*12-8/9*3*(3*t+5)-2*t = 0
36-10*t-40/3 = 0
68/3-10*t = 0
(68/3-10*t)/3 = 0
(68/3-10*t)/3 = 0 // * 3
68/3-10*t = 0
68/3-10*t = 0 // - 68/3
-10*t = -68/3 // : -10
t = -68/3/(-10)
t = 34/15
t = 34/15
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