Question

expressões numéricas 15+{6+[(3x3-21)+2]}​

Answer 1

15+{6+[(3x3-21)+2]}

15+{6+[(9-21)+2]}

15+{6+[-12+2]}

15+{6+(-10)}

15+{-4}

11

Answer 2

15+{6+[(3.3-21)+2]}=

15+{6+[(9-21)+2]}=

15+{6+[-12+2]}=

15+{6+[-10]}=

15+{6-10}=

15+{-4}=

15-4=11