14*(1/7)^2-23*1/7 помогите решить

Question

14*(1/7)^2-23*1/7 помогите решить

Answer 1

14×1/49=14/49 23×1/7=23/7 14/49-23/7=14-161/49=-147/49=-3

Comments

=14*1.49 - 23*1\7 = 2\7-23\7 = -21\7 = -3