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แบบฝกึ หดั 1. A + B ∗̅̅∗̅ C * ( D + E ) - F 2. A + B * 3+ (C ∗̅̅∗̅ 2 * D ) - E 3. A * B ∗̅̅∗̅ C ̅∗̅∗̅ D / E + F - G