7 c 2 6 July 8, 2019 16 32 64 128 7 6c c 2 21 3c C 2 6c 7 0 6 7 c 2 0 6.1 7 c 2 Art 7 c 2 dpr 633 72 C 2 6c 7 6.302 7 c )( 2 1 2 c 6 )= 7 2 7 4 c )= 6 6 =- 2 7 c how to solve
