Question

o valor da expressão 2-¹+6.(2/3)@-(-1/3)-¹

Answer 1

$2 ^{-1} +6* \frac{2}{3} -( \frac{-1}{3} ) ^{-1} = \\ \\ \frac{1}{2} + \frac{12}{3}-(-3) ^{1}= \\ \\ \frac{1}{2} +4+3= \\ \\ \frac{1}{2} +7= \\ \\ \frac{1+14}{2} = \\ \\ \frac{15}{2}$