WEBVTT
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the symbol represented by people signed with a question mark
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00:00:03.359 --> 00:00:12.230 A:middle L:90%
over it is red is possibly equal to We use
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00:00:12.230 --> 00:00:17.730 A:middle L:90%
it to determine whether to expressions are equal. The
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equations 50 equals X and X equals 50 art equivalent
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. It does not matter which side the variable is
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on as long.