7 1 х ) 3 9 4 5 July 8, 2019 16 32 64 128 7 1 х )+ 3 9 4 5 7 1 3 9 4 5 (7 1-х)+3 9=4 5 9 3/4 х=7 7/11 9 – 7(х + 3) = 5 – 4х
