Question

 1- 1 supra 2 : ( 1 - 1 supra 2 ): [ -1/5 + (-4) x (1/3+1/3:(-2) ) ] + 1/13

Answer 1

Răspuns:   : inseamna impartire, / inseamna fractie

1- 1//2 : ( 1 - 1//2 ): [ -1/5 + (-4) x (1/3+1/3:(-2) ) ] + 1/13

1 - 1/2 : 1/2 : [- 0,2 + (-4) x (1/3 - 1/3 x 1/2)] + 1/13

1 - 1 : [ -1/5 + (-4) x (1/3 - 1/6)] + 1/13

1 - 1 : ( -1/5 + (-4) x 1/6) + 1/13

1 - 1 : ( -1/5 - 2 x 1/3) + 1/13

1 - 1 : (-1/5 - 2/3) + 1/13

1 - 1 : (-13/15) + 1/13

1 + 15/13 + 1/13

29/13