document.write( "Question 1191937: Zac is four years younger than Alex. Lucas is twice Alex’s age. The sum of the ages equal 64. How old is Alex? \n" ); document.write( "
Algebra.Com's Answer #823809 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "The given information compares the ages of both Zac and Lucas to the age of Alex, so use Alex's age as your starting point.

\n" ); document.write( "x = Alex's age
\n" ); document.write( "x-4 = Zac's age (4 younger than Alex)
\n" ); document.write( "2x = Lucas's age (twice Alex's age)

\n" ); document.write( "The sum of the ages is 64:

\n" ); document.write( "(x)+(x-4)+(2x) = 64
\n" ); document.write( "4x-4 = 64
\n" ); document.write( "4x = 68
\n" ); document.write( "x = 17

\n" ); document.write( "ANSWER: Alex's age is x = 17

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