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x = 1 : -4/5
x = -5/4
8. 7 K - 4 = 5 K
7k - 5 K = 4
2 K = 4
K = 2
11.4z + 6 = 24 - 2 z
4z + 2z = 24 - 6
6z = 18
z = 18/6
z = 3
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