![Math formulas written on a green chalkboard](https://www.freestock.com/450/freestock_102509135.jpg)
![Math formulas written on a green chalkboard](https://www.freestock.com/450/freestock_102509135.jpg)
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Math formulas written on a green chalkboard
Category Miscellaneous, Backgrounds/Textures
Large - JPG - 4688 x 2552 px @ 300 dpi
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