Words Problem and Solution written on a blackboard with chalk

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Size: 4582px × 3055px
Photo credit: © Craig Russell / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: background, black, blackboard, board, bulb, business, chalk, chalkboard, concept, design, draw, frame, idea, light, problem, school, solution, symbol, text, white, wooden, words, writing