Penyelesaian dari 2(3x
- 1) - 2 = 20, adalah. . . .
a. x = 2
b. x = 3
c. x = 4
d. x = 5
Penyelesaian :
2(3x - 1) - 2 =
20
2(3x - 1) - 2 = 20
6x - 2 -
2 =
20
6x - 4 = 20
6x - 4 + 4
= 20 + 4
6x = 24
x
= 24 : 6
x
= 4