Question

До суми чисел −7 3/4 і −6 5/6 додай число, протилежне 2 2/3.

Answer 1

1)  ( - 7 3/4 + ( - 6 5/6 )) + ( - 2 2/3 ) = ( - 7 9/12 + ( - 6 10/12 )) + ( - 2 8/12 ) =

= - 13 19/12 + ( - 2 8/12 ) = - 14 7/12 - 2 8/12 = - 16 15/12 = - 16 5/4 =

= - 17 1/4 = - 17 25/100 = - 17,25.