Question

Alguem sabe resolver:

17- {3.(4+1) - 2.5² + [3².5-8. (4-1)]}
obrigada.

Answer 1

17-{3.(5)-2.25+[9.5-8.(3)]}
17-{3.5-2.25+[9.5-8.3]}
17-{3.5-2.25+21}
17-{15-50+21}
17-{-35+21}
17-{-14}
31