(15,97 − 9,79) · 0,25 + 102,07 =

\((15.97 - 9.79) \cdot 0.25 + 102.07 = 6.18 \cdot 0.25 + 102.07 = 1.545 + 102.07 = 103.615\)

Ответ: 103,615