document.write( "Question 507798: Annie is five years older than twice her brother Dan's age. Write an alegraic expression to represent the sum of their ages. \n" ); document.write( "
Algebra.Com's Answer #340759 by Maths68(1474)\"\" \"About 
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Let
\n" ); document.write( "Age of Annie = a
\n" ); document.write( "Age of Dan = d
\n" ); document.write( "Twice of Dan' age = 2d\r
\n" ); document.write( "\n" ); document.write( "Annie is five years older than twice her brother Dan's age means if we add 5 to the twice of Dan'age both Annie and Dan will be of equal age\r
\n" ); document.write( "\n" ); document.write( "Annie = twice of Dan's age + five years\r
\n" ); document.write( "\n" ); document.write( "a = 2d + 5\r
\n" ); document.write( "\n" ); document.write( "Sum of their ages = Annie'age + Dan'age
\n" ); document.write( "Sum of their ages = a + d
\n" ); document.write( "Put the value of a in above equation
\n" ); document.write( "Sum of their ages = (2d+5)+d
\n" ); document.write( "Sum of their ages = 2d+5+d
\n" ); document.write( "Sum of their ages = 3d+5\r
\n" ); document.write( "\n" ); document.write( "Let
\n" ); document.write( "Dan's age = 2
\n" ); document.write( "Annie age = 2d + 5 = 2*2 + 5 = 4+5=9
\n" ); document.write( "Sum of their ages = Annie's age + Dan's age
\n" ); document.write( "Sum of their ages = 9 + 2 = 11 \r
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\n" ); document.write( "\n" ); document.write( "Now put the values in expression for the sum of their ages
\n" ); document.write( "Sum of their ages = 3d+5
\n" ); document.write( "Sum of their ages = 3(2)+5 = 6+5=11
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