Vista posteriore di una donna premurosa che cerca di risolvere problemi di matematica. Calcoli matematici su lavagna di gesso nero . - Foto e immagini stock

Rear view of a thoughtful woman who is writing math calculations on green chalk board.

Portrait of young businesswoman standing in front of blackboard with mathematical formula

Portrait of businesswoman with arms crossed in front of chalkboard with mathematical formula

Portrait of businesswoman with arms crossed in front of chalkboard with mathematical formula

Beautiful woman standing in front of blackboard thinking how to solve a math problem

Young lady is pondering about complicated math problem. Formulas and graphs are drawn on the green chalkboard.

Young girl with hands crossed standing at blackboard, many formulas and geometry sketches on it. Concept of education.

A woman's hand is writing math calculations on black chalk board. Analyst.

Portrait of blond girl with notebook solving a difficult task standing near blackboard with formulas. Concept of math. Mock up

Portrait of a blond businessman wearing a suit and pulling out his hair in panic. A rear view. A blackboard background with formulas written on it

Portrait of a pensive blonde woman with long hair wearing an elegant dress and looking upwards. A blackboard background with formulas written on it

Young woman with dark long hair is wearing a white sweater and holding her glasses with a thick frame. She is looking to the distance while standing near a blackboard with formulas on it.

Portrait of nerd girl solving a difficult task standing near blackboard with formulas. Concept of research and development. Mock up

Thoughtful teen girl in glasses holding copybook standing near white wall with formulas written on it. Concept of education and science. Toned image double exposure