Question 290810
I believe your problem is the way the problem is written:
I'll rewrite it for you:
5*2(2-4+1)/3(7-1)
10(-1)/3(6)
-10/18=-5/9 ans.
or:
5(2-4+1)(2/3)(7-1)
(5*-1)(2/3)*6
-5(2/3)*6
-10/3*6
-60/3=-20 ans.