23 1/2 + 18 koma 26 dikurang 25,7 dikali 2,6 hasilnya

23 1/2 + 18,26 - 25,7 × 2,6
= 47/2 + 1.826/100 - 257/10 × 26/10
= 47/2 + 1.826/100 - 6.682/100
= 2.350/100 + 1.826/100 - 6.682/100
= - 2.506/100
= - 25 6/100
= - 25 3/50

Semoga bisa membantu...