3*(3t-2)-13=5*(12+3t)+28
3 * (3t - 2) - 13 = 5 * (12 + 3t) + 28 9t - 6 - 13 = 60 +15t + 28 9t -15t = 60 + 28 + 19 - 6t = 107 t = - 107/6 t = - 17 5/6
9t-6-13=60+15t+28 15t-9t=-19-88 6t=-107 t=-17 5/6