(13,67 - 9,99) : 2,3 + 6,05 × 4
25.8 ......................
(13.67-9.99):2.3+6.05*4=25.8 13.67-9.99=3.68 3.68:2.3=1.6 6.05*4=24.2 1.6+24.2=25.8