ID 11510812840 © Igorkovalchuk | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
algebra background black calculation chemistry closeup college complex copy cross detail draft drawing education electrical engineering equation formula geometry hand homework isolated learning macro math mathematical mathematics matrix monochrome notebook numbers paper physics plus print problem research school science scientific sheet sign solution study studying symbol text theoretical theory white writing written