Index: wp-content/themes/twentytwelve/style.css
===================================================================
--- wp-content/themes/twentytwelve/style.css	(revision 21664)
+++ wp-content/themes/twentytwelve/style.css	(working copy)
@@ -1302,7 +1302,7 @@
 @media screen and (min-width: 600px) {
 	.entry-content p,
 	.entry-summary p {
-		text-align: left;
+		text-align: inherit;
 		text-justify: auto;
 	}
 	#author-avatar {
Index: wp-content/themes/twentytwelve/rtl.css
===================================================================
--- wp-content/themes/twentytwelve/rtl.css	(revision 21664)
+++ wp-content/themes/twentytwelve/rtl.css	(working copy)
@@ -189,10 +189,6 @@
 	.site-header h2 {
 		text-align: right;
 	}
-	.entry-content p,
-	.entry-summary p {
-		text-align: right;
-	}
 	.template-home .widget-area .widget_text img {
 		float: right;
 		margin: 8px 0 8px 24px;