document.write( "Question 201650: Given:B is the midpoint of AC
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Algebra.Com's Answer #151911 by solver91311(24713)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "B midpoint of AC: Given
\n" ); document.write( "AB + BC = AC: Definition of a mid-point (the part that says a mid-point divides a line segment into two parts)
\n" ); document.write( "AB = BC: Definition of a mid-point (the part that says the two parts are equal)
\n" ); document.write( "AB + AB = AC: Substitution property of equality
\n" ); document.write( "2AB = AC: Definition of multiplication for whole numbers
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