Răspuns :
x+17.34=x
x·3.5=x
x+11.56=249.56
Rezolvare:
249.56-11.56=238
238:3.5=68
68-17.34=50.66
Proba:
50.66+17.34=68
68·3.5=238+11.56=249
x·3.5=x
x+11.56=249.56
Rezolvare:
249.56-11.56=238
238:3.5=68
68-17.34=50.66
Proba:
50.66+17.34=68
68·3.5=238+11.56=249