Question

найдите значение выражения (-1/12+2/5)-(-0.36-0.64)-1 целая 13/15

Answer 1

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

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

= ( -5/60 + 24/60) + 1 - 28*4/15*4 =

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

= 19/60 + 60/60 -112/60 = (19+60-112)/60 = -33/60 = -11*3/20*3 = -11/20

Ответ: -11/20.