Homework Help: algebra

Posted by Theresa on Tuesday, January 6, 2009 at 2:20pm.

Twins Diana, and Riana are each 6 years older than their younger brother Kyle. Together, their three ages total 21 years. How old is kyle? Please show your work to help me understand how to work the problem

algebra - bobpursley, Tuesday, January 6, 2009 at 2:22pm
2T+K=32 and K=T-6
Put that last into the first equation for K, then solve for T.
algebra - Damon, Tuesday, January 6, 2009 at 2:23pm
2 x + x-6 = 21

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