50= - 10t+80 We move all terms to the left: 50 - ( -10t+80) =0 Get rid of the parentheses 10t - 80+50=0 We add all the numbers together, and all the variables 10+ - 30=0 We move all the terms containing t to the left, all the other terms to the right 10t = 30 t = 30/10 t = 3
