Odpowiedź :
80/63 = 1 + z/30 | * 30
30*80/63 = 30 + z
2400/63 = 30 + z
38 6/63 = 30 + z
38 2/21 = 30 + z | - 30
z = 8 2/21
Odpowiedź:
Szczegółowe wyjaśnienie:
[tex]\frac{80}{63} =1+\frac{z}{30}[/tex]
[tex]1\frac{17}{63} =1+\frac{z}{30}[/tex] [tex]/-1[/tex]
[tex]1\frac{17}{63} -1=\frac{z}{30}[/tex]
[tex]\frac{17}{63} =\frac{z}{30}[/tex] [tex]/*30[/tex]
[tex]\frac{17}{63} *\frac{30}{1} =z[/tex]
[tex]z=\frac{510}{63} =\frac{170}{21}=8\frac{2}{21}[/tex]
[tex]z=8\frac{2}{21}[/tex]