An illustration of a blackboard with a mathematical equation written on it. The equation is written in white chalk and consists of three symbols - a plus sign, a minus sign, and a minus symbol. The plus sign is on the left side of the blackboard, the minus sign is in the center, and the minus symbol is at the bottom right corner. The blackboard is rectangular in shape and has an orange border around the edges.
User adriante uploaded the image
User adriante uploaded the image
Formula - Math Equations On Blackboard PNG
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