Question

(-1/12+2/5)-(-0,36-0,64)-1 13/15 ( одна целая тринадцать пятнадцатых)

Answer 1

(-1/12 + 2/5) - (-0,36-0,64) - 1 13/15 =

= (-1/12 + 2/5) - (-1) - 28/15 = -1/12 +2/5 + 1 - 28/15 =

= -1*5/12*5  + 2*12/5*12 +  60/60 - 28*4/15*4 =

= -5/60 + 24/60 + 60/60 - 112/60 = (-5+24+60-112)/60 = -33/60   =

= -11*3/20*3 = -11/20