3x – 4 = 2x + 1
3x – 4 – 2x = 2x + 1 – 2x
x – 4 = 1
x – 4 + 4 = 1 – 4
x = -3
Jelaskan dan perbaiki kesalahan dalam penyelesaian persamaan di bawah ini.
3× – 4 = 2× + 1
3x – 4 – 2x = 2x + 1 – 2x
x – 4 = 1
x – 4 + 4 = 1 + 4
x = 5
atau
3× – 4 = 2× + 1
3× – 2× = 1 + 4
× = 5