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girl writing the mathematical formulas on a chalkboard

Stock Photo:
Image ID: 53788222
Release Information: Signed model release filed with Shutterstock, Inc
500x336 6.9"x4.7" (72dpi) 170 KB
1000x671 3.3"x2.2" (300dpi) 571 KB
6005x4032 20.0"x13.4" (300dpi) 9.0 MB
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