Răspuns :
403-148-(72:a+547-398)+162=259
255-(72:a+149)+162=259
-(72:a+149)=259-162-255
-72:a-149=-158
-72:a=-158+149
a=[tex] \frac{-9}{-72} = \frac{9}{72} = \frac{1}{8} [/tex]
255-(72:a+149)+162=259
-(72:a+149)=259-162-255
-72:a-149=-158
-72:a=-158+149
a=[tex] \frac{-9}{-72} = \frac{9}{72} = \frac{1}{8} [/tex]