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x×[210:15+5×12-18]=5.600

Răspuns :

x × [210:15+5×12-18]=5.600
x=5.6÷[15+60-18]
x=5.6÷56
x=1/10

Sper ca te-am ajutat!
X•[210:15+5•12-18]=5.600

X•(14+60-18)=5.600

X•56=5.600

X=5.600:56

X=100