diketahui t memenuhi persamaan 2(t+3) + 7(t-3)=5(t-1) nilai dari (2t) sama dengan?

Jawab:
2(t+3) + 7(t-3) = 5(t-1)
=> 2t+6+7t-21=5t-5
=> 9t-15=5t-5 *masing masing pindah ruas
=> 9t-4t= -5+15
=> 5t=10
=> t= 10/5
=> t = 2
Maka 2t => 2(2) = 4

Semoga membantu