Jika 3(x + 2) + 5 = 2(x + 15), maka nilai 2(x - 1) adalah.......

3(x + 2) + 5 = 2(x + 15)
3x + 6 + 5 = 2x + 30
3x - 2x = 30 - 6 - 5
x = 19

jadi 2(x-1)
= 2(19 - 1)
= 2.18
= 36

3 (x + 2) + 5 = 2 (x + 15)
3x + 6 + 5 = 2x + 30
3x - 2x = 30 - 6 - 5
x = 19

Substitusi x = 19
2 (x - 1) =
2 (19 - 1) =
2 (18) =
36

Semoga membantu:)