Question

M+n+2=20 то найти 10m + 10n+12,8+7,2

Answer 1

m + n + 2 = 20

m + n = 20 - 2

m + n = 18

10m + 10n + 12,8 + 7,2 = 10 · (m + n) + 20 = 10 · 18 + 20 = 180 + 20 = 200

Ответ: 200.

Answer 2

хелп https://znanija.com/task/31099703