Hi!
(12w - 11w) (- 13 + 24) = 77
1w + 11 = 77
1w + 11 - 11 = 77 - 11
1w = 66
Hope this helps! :)
-Peredhel
12w - 13 - 11w + 24 = 77
combine like terms
w + 11 = 77
subtract 11 from both sides
w = 66
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