caption: Trick (signed) Convert both numbers to signed
exif: {"Image DocumentName": "Trick (signed) Convert both numbers to signed", "Image ImageDescription": "Perform addition or subtraction. Does the result fit as a signed No -> V=1. Yes -> V=0. 8-bit. Examples: 10 \u2013 5 = 5, V= \u2013 100 = -200, V=1. Bard, Gerstlauer, Valvano, Yerraballi.", "Image XResolution": "300", "Image YResolution": "300", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}