12/40+4/5×2/3-25/30=

semoga membantu, maaf kalo salah:))

4/5×2/3 = 12/15

12/40+12/15-25/30

36/120 + 96/120 - 100/120 = 132/120 - 100/120
= 32/120

32/120÷8/8 = 4/15