A businessman's hand holds a small easel blackboard with a word Teach on it with equations on the background.

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A businessman's hand holds a small easel blackboard with a word Teach on it with equations on the background. Education and tutoring. Math problems. Science and knowledge.

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Size: 6010px × 4010px
Location: Russian Federation
Photo credit: © Aleksandr Elesin / Alamy / Afripics
License: Royalty Free
Model Released: No

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