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Anonymous
The following steps lead you to the correct answer: 9z = 5z + 16 9z - 5z = 16 4z = 16 z = 4, thus the correct answer is z = 4
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9z-5z = 30+z 3z = 30 z = 10
3-5z
9z
9z+8 = 3z-10 9z-3z = -10-8 6z = -18 z = -3
8x + 9z