2 (t + 3) +7 (t -3) = 5 (t - 1) ditanya 2t?

2(t+3)+7(t-3)=5(t-1)
2t+6+7t-21=5t-5
2t+7t-5t=-5-6+21
4t=10
t=10/4

2t=2(10/4)=20/4=5

2 ( t + 3 ) + 7 ( t - 3 ) = 5 ( t - 1 )
2t + 6 + 7t - 21 = 5t - 5
2t + 7t + 6 - 21 = 5t - 5
9t - 15 + 5 = 5t
9t - 10 = 5t
9t - 5t = 10
4t = 10
t = 10/4
t = 2,5

2t
= 2 × 2,5
= 5

jadi, hasil dari 2t adalah 5