Mirando difícil compleja ecuación matemática en el tablero de balckboard - Foto e imágenes de stock

Looking at difficult complex mathematics equation on balckboard

Looking at difficult complex mathematics equation on balckboard

Looking at difficult complex mathematics equation on balckboard

Looking at difficult complex mathematics equation on balckboard

Looking at difficult complex mathematics equation on balckboard

Looking at difficult complex mathematics equation on balckboard

Businessman writing formula on chalk board

Hand of a student working on complex equation

Female student working on mathematics problem on blackboard

A student asking to the teacher about mathematics

Female student working on mathematics problem on blackboard

Female student working on mathematics problem on blackboard

Hand ceaning mathematics formula on blackboard

Hand drawing a diagram on blackboard