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Rezolva (30÷x+6)÷4=84

Răspuns :


(30*x+6):4=84
30x+6/4=84
2(15x+3)/2=84
15x+3/2=84
15x+3=168
15x=168-3
15x=165
x=11

Sper ca ti-am fost de folos :D!