Explicație pas cu pas:
a) \( (23+15) \times 3 + 14 \times 5 = 38 \times 3 + 70 = 114 + 70 = 184 \)
b) \( 5 \times (46-16) + 4 \times (123 + 315) = 5 \times 30 + 4 \times 438 = 150 + 1752 = 1902 \)
II = \( 7 \times 5 \times 12 - 4 \times 3 \times 14 + 124 \times 5 = 420 - 168 + 620 = 872 \)