Izinombolo ezinegethivu: +/−

Enombolweni enegethivu, sebenzisa inkinobho yokuhlanganisa-susa, hhayi eyokususa. Thayipha 42, bese cindezela . Cindezela , bese uthayipha 5. Cindezela , thayipha 120, bese cindezela . Isibalo $\displaystyle 42 \times (-5) + 120$ sinika −90.. Ungaqala futhi ngokuthayipha 5, bese ufaka inkinobho yokuhlanganisa-susa.

▶ Buka lesi sinyathelo kwi-vidiyo (16:58)