80 × 1 1/2 + 16/2 = trkhir ywy._​

Penjelasan dengan langkah-langkah:

80 × 1 1/2 + 16/2

= 80/1 × 3/2 + 16/2

= 80×3/1×2 + 16/2

= 240/2 + 16/2

= 240 + 16/2

= 256/2

= 128

= 80 × 1 1/2 + 16/2

= 80 × (1 × 2 + 1)/2 + 8

= 80 × 3/2 + 8

= 240/2 + 8

= 120 + 8

= 128