4 over 7.
Seven.
It should be negative 1 over z.
The sum of -3/5 and 1/7 is -16/35
it equals negative 1/8
((negative 3) / 7) + (negative 5) = -5.42857142857 when calculated.
(-1 / 10) + (7 / 10) = 0.6
-(1/4) + (5/7) = 0.464285714
it is negative 4.25
-3 + -7 + 5 + -4 + -6 = -15
x=-16
Equal negative 14!