Sagot :
[tex] \frac{z}{3}+ \frac{12}{3}= \frac{5}{6} [/tex] ⇒ [tex] \frac{z+12}{3}= \frac{5}{6} [/tex]
[tex]z+12= \frac{5\cdot3}{6}=\boxed{2.5} [/tex]
[tex]z=2.5-12[/tex]
[tex]\boxed{\boxed{\boxed{z=-9.5}}}[/tex]
[tex]z+12= \frac{5\cdot3}{6}=\boxed{2.5} [/tex]
[tex]z=2.5-12[/tex]
[tex]\boxed{\boxed{\boxed{z=-9.5}}}[/tex]
[tex] ^{/2}\frac{z}{3} +^{6/}4= \frac{5}{6} \\ \\ \frac{2z}{6} + \frac{24}{6} = \frac{5}{6} => \\ \\ 2z=5-24 \\ 2z=-19 \\ z=-9.5[/tex]