Plus equals Minus (+ = −) portrays the artwork of Fabiana de Barros, a brazilian artist based in Switzerland. Fabiana is best known for her work with “cultural kiosks”, a physical structure temporarily installed in different parts of the world. The structure, often painted in black, was open for selected artists and people in general to intervene and interact with it. The book simulates one of these structures by being painted all black. The typeface Gill Sans Extra Black was used because of its calligraphic look, that resembles the artists writing of the word “Fiteiro” at the kiosks fronts. Exhibition design by Ricardo Amado.