Posted by Lily on Sunday, October 3, 2010 at 8:13pm.
x+x-2+x+4=38
3x+2=38
3x=36
x=12
12, 10, 16
PT=sum of all sides
38=x+(x-2)+(x+4)
38=x+x-2+x+4
38=x+x+x-2+4
38=3x+2
38-2=3x
36=3x
36/3=3x/3
12=x
one side is 12
12-2=10
the other side is 10
12+4=16
the last side is 16
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