Science. The school Board on the background of mathematical equations and formulas. Physics. Hand-drawn diagrams and graphs. Doodle. Vector illustration of handwriting. Handwriting. premium vector by lulechkay

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vector background number illustration abstract board black dark formula symbol wall real figure school wallpaper wood education world science learn many engineering map divide technical engineer count physics theory teach tan mathematics matrix blackboard plus multiplication minus root calculate subtraction limit math integral adding sum equation derivation scalar derivative gens

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