3 х 8 20 4 July 8, 2019 16 32 64 128 3 8 20 46 3 8 20 4 3 8 20 48 4 x 3 )+ 8 4x 20 3 8 х 3 х - -7 =8 3 4х+8 1 х-2 3=20 7 3/8*х=2 4