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If 3−5+7=6−x3-5+7=6-x3−5+7=6−x, then xxx equals
Pick one
Simplifying the left side of the equation, we obtain 5=6−x5 = 6-x5=6−x.
Therefore, x=6−5=1x = 6-5 =1x=6−5=1.
Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project.