Răspuns:
a=[tex]\frac{17}{16}[/tex]=1.0625
Explicație pas cu pas:
[tex]\displaystyle\frac{(24x7)+(34:a)}{4x8-30} =50\times2\times1\\\\\\ \frac{168+(34:a)}{32-30} =100\times1\\ \\ \\ \frac{168+(34:a)}{2} =100\\ \\ \\ 168+(34:a)=100\times 2\\ \\ 168+(34:a)=200\\ \\ 34:a=200-168\\ \\ 34:a=32\\ \\ a=\frac{34}{32} \\ \\ a=\frac{17}{16}[/tex]
