Answer :
3 · t - 12 = 40
3t - 12 = 40 |add 12 to both sides
3t = 52 |divide both sides by 3
t = 52/3
t = 17 1/3
3t - 12 = 40 |add 12 to both sides
3t = 52 |divide both sides by 3
t = 52/3
t = 17 1/3