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It should be negative 1 over z.
-3 + -7 + 5 + -4 + -6 = -15
6 + (-13) =6 - 13 = -7
Seven.
-1
6/7
4 over 7.
Positive six: 6 or +6.
8/-3 + -7/2 = 8x-2/-3x-2 + -7x3/2x3= -16/6 + -21/6= -37/6
-6 + 7 = 1.
-3/4 + 1/6 = -7/12
Positive one.
-7/8 < -5/6 (a+)