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The answer to the problem 1 on page 56 of the first volume of senior one mathematics.
Solution: (1) Original formula = (-6 )× (-1/2)+(-6 )×1/3.

=3-2

= 1

(2) The original formula =1/4×12-1/2×12+1/6×12.

=3-6+2

=- 1

(3) The original formula = (-1000-2 )×17 = (-1000 )×17-2×17.

=- 17000-34

=- 17034

Sorry, it's overdue, but I'd be happy to add it.