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Cum se rezolva exercitiul:
403-148-(72:a+547-398) +162=259 ofer10 p


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]