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aflați x [156-(90:x+12):3]×2-8=290​

Răspuns :

Răspuns:

[156-(90:x+12):3]×2-8=290

=[156-(90:x+12):3]×2=290+8=298

=156-(90:x+12):3=298:2=149

=(90:x+12):3=156-149=7

=90:x+12=7×3=21

=90:x=21-12=9

=x=90:9

x=10