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Determina-l pe X { [ ( x-8)×7+6-5]-4}×3-2=10

Răspuns :

 { [ ( x-8)×7+6-5]-4}×3-2=10
 { [ ( x-8)×7+1]-4}×3=12
 [ ( x-8)×7+1]-4=4
 ( x-8)×7+1=8
 ( x-8)×7=7
 x-8=1
x=9