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4z+12=7z-9 Please explain every step to solve

4z+12=7z-9 Please explain every step to solve
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4z+12=7z-9
Please explain every step to solve

User BoreBoar
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1 Answer

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4z+12=7z-9\ \ \ \ | subtract\ 7z\\\\ -3z+12=-9\ \ \ | subtract\ 12\\\\ -3z=-21\ \ \ | divide\ by\ -3\\\\ z=7\\\\ Solution\ is\ z=7.
User Stavros Avramidis
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