A)(–3x)2 · (–2x)3; б) (0,8x2)2×1 2/7xy в) (1 3/4x)2×(-3/7x3y) - вопрос №20363715322308221271342373 от supereleo2018 28.03.2021 12:10

Question

Математика: A)(–3x)2 · (–2x)3; б) (0,8x2)2×1 2/7xy в) (1 3/4x)2×(-3/7x3y)

supereleo2018 · Answer

Х+9=27        х-7=14         60-с=18        2х+1=77              4х-3=29х=27-9         х=14+7        с=60-18        2х=77-1                4х=29+3  х=18            х=21            с=42            2х=76                   4х=32 18+9=27       21-7=14       60-42=18      х=76/2                  х=32/4                                                             х=38                     х=8                                                                  2*38+1=77            4*8-3=29                                  ...