4/5-2/3+4/15

Compute: 4/5 − 2/3 + 4/15

• Common denominator: 15
• Convert: 4/5 = 12/15, 2/3 = 10/15
• Sum: 12/15 − 10/15 + 4/15 = 6/15 = 2/5

Final: 2/5 (which is 0.4).