12 4x 5 7 x July 8, 2019 16 32 64 128 12 7 x 5 16 4x 4x 12 при x 7 0 5 12 − 4x 8 − 7 x 5 )= 23 12 5 x 1 4 12 x 4 + 7 12 x 4 5
