Помогите!!!!!!!!!!!!!!!!!
Найди неизвестное число.

1) (340 754 - k) : 6 = 23 800340 754 - k = 23 800 × 6340 754 - k = 142 800k = 340 754 - 142 800k = 197 9542) m × 80 - 32 965 = 31 835m × 80= 31 835 + 32 965m × 80= 64 800m = 64 800 : 80m = 8103) 70 × (n:200) = 16 450n : 200 = 16 450 : 70n : 200 = 235n = 235 × 200n = 47 000