mazik
mazik
07-12-2014
Mathematics
contestada
4z+12=7z-9
Please explain every step to solve
Respuesta :
luana
luana
07-12-2014
[tex]4z+12=7z-9\ \ \ \ | subtract\ 7z\\\\ -3z+12=-9\ \ \ | subtract\ 12\\\\ -3z=-21\ \ \ | divide\ by\ -3\\\\ z=7\\\\ Solution\ is\ z=7.[/tex]
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