Răspuns:
[tex]a=\frac{97}{6}[/tex], a=16.1(6)
Explicație pas cu pas:
{[1260:(201-3a)+5]·3-18}=2·3
[tex][\frac{1260}{(201-3a)+5} ]*3-18=6[/tex]
[tex][(\frac{3780}{-3a+206} )]-18=6|*-3a+206[/tex]
3780-18(-3a+206)=6(-3a+206)
54a+72=-18a+1236 | -72
54a=-18a+1164 | +18a
72a=1164 | :72
[tex]\frac{72a}{72} =\frac{1164}{72}[/tex]simplificam cu 12
[tex]a=\frac{97}{6}[/tex]
a=16.1(6) = 16.16666666-pana la infinit
Succes! :)
