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Edit history of sicp-ex-2.79

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22013-08-16 12:47:32+2 -4 line(s)[View this version, source] [Diff to previous]
Corrected the solution. The result of equ? is boolean and must not be tagged.
12010-08-23 11:27:06+35 -0 line(s)[View this version, source] [Diff to current|previous]
add: solution add: nav
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