Răspuns:
[tex]a=-\frac{15}{8} [/tex]
Explicație pas cu pas:
[tex]\frac{a}{3} = a+\frac{5}{4} [/tex]
[tex]\frac{a}{3} -a = \frac{5}{4} [/tex]
[tex]\frac{a-3a}{3} = \frac{5}{4} [/tex]
[tex]\frac{-2a}{3} = \frac{5}{4} [/tex]
[tex]a=\frac{-3*5}{2*4} = -\frac{15}{8} [/tex]
