Помогите решит примеры!!!
1)-18,9 + 16,3 =
2)-41,7 - 913,6 =
3)-7,1 - (-4,3) =
4)-5 + ( -7 ) =
   18      12

5) -4 5 - (-7 3)=
        9          8

6) (-4 3 - 2 75)-(-8 5+ 5 7)=
          5     100       6      18

7) /8-Х/=13,5

8)-7 + 5 =
    9     6

9)- (5 2-Х) - 3 1 = 6 5
          7            3      42

10) -9,4 - (7,2-Х)=13,4
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