Автор - Aigerimaaibana
а) 430 - (23+3) = 430-26 = 404 (error)
б) 250 + (360-60) = 250+300 = 550
в) (300+320) + 250 = 620+250 = 770
г) (420000+3000) - 200000 = 423000 - 200000 = 223000
д) (700000-230000) + 40000 = 470000 + 40000 = 510000