If you want simpler solution you can just set negative margin
android:layout_marginLeft="-64dp"
for your left_drawer:
<include
android:id="@+id/left_drawer"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
layout="@layout/drawer"
android:layout_marginLeft="-64dp"/>
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