Pls.Solve equation 13t/42 - t/7 = 1,thank you

13t/42 - t/7 = 1 (Given)
13t-6t=42 (Multiply both sides by 42)
7t=42 (Simplify LHS)
t=6 (Divide by 7)

13t/42 - t/7 = 1 (Given)
13t - t/7 = 42 (Multiply both sides by 42)
13t - t = 294 (Multiply both side by 7)
12t = 294 (Simplify)
t = 24.5 (Divide both sides by 12)

t=6 ......lolololololol rosie