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(e-5×6+10×5)÷5×4×8=42

Răspuns :

(e-5×6+10×5)÷5×4×8=42
(e-30+50)÷160=42
(e-30+50)=42×160
e=6720-30+50
e=6720
v: (6740-30+50)÷160=42
6720:160=42
r:6720
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