Question

7) CALCULE:


a)9-2 - ( -2/3)3 =



b)( -9 + 3)2 + 15 =



c)(32)-1 + (42 : 42)=

Answer 1

$a)9 - 2 - ( - \frac{2}{3} )3 \\ 9 - 2 - ( - \frac{6}{3} ) \\ 9 - 2 - ( - 2) \\ 9 - 2 + 2 = 5$

$b)( - 9 + 3)2 + 15 \\ ( - 6)2 + 15 \\ - 12 + 15 = 3$

$c) \: 32 - 1 + ( \frac{42}{42} ) \\ 31 + 1 = 32$