Resolvemos de izquierda a derecha.
[tex]\sf 8+2-5-4-3-1= \\ \sf 10-5-4-3-1= \\ \sf 5 - 4-3-1= \\ \sf 1 - 3 - 1 = \\ \sf - 2 - 1 = \boldsymbol{- 3}[/tex]
Saludos.
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Verified answer
Resolvemos de izquierda a derecha.
[tex]\sf 8+2-5-4-3-1= \\ \sf 10-5-4-3-1= \\ \sf 5 - 4-3-1= \\ \sf 1 - 3 - 1 = \\ \sf - 2 - 1 = \boldsymbol{- 3}[/tex]
Saludos.