- Size:
- 3888 x 2592 (10.1 MP), 13.0 " x 8.6 " @300 dpi
- Tags:
- 2,
- plus,
- counting,
- count,
- blackboard,
- resolve,
- green,
- background,
- school,
- union,
- physics,
- texture,
- energy,
- sign,
- college,
- education,
- math,
- study,
- chalkboard,
- science,
- chalk,
- equal,
- adding,
- equation,
- caption,
- sum,
- amount,
- addition,
- total,
- add,
- formula,
- theory
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