Math on dark green board with many solution

---

Size: 5472px × 3648px
Location: Thailand
Photo credit: © Pachan Saelim / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: algebra, background, black, blackboard, board, calculate, chalk, chalkboard, class, classroom, college, complex, complicated, concept, drawing, education, equation, equations, exam, formula, formulas, green, high, knowledge, learn, lecture, lesson, line, math, mathematical, mathematics, maths, number, physics, problem, school, science, sign, solution, study, studying, symbol, teach, teacher, theory, trigonometry, university, white, write