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1100-[(128ori 4-144:x)ori2]-171=1

Răspuns :

1100-[(128· 4-144:x)·2]-171=1⇒1100-[(128· 4-144:x)·2]=172⇒[(128· 4-144:x)·2]=1100-72=928⇒128· 4-144:x=928:2=464⇒512-144x=464⇒ 144· x=512-464=48 ⇒x=144/48=3