Question

Expressão numérica
-3 {30:5-[-7 (5-2)+3]:6}

Answer 1

-3 {30 : 5 - [-7 (5-2) +3] : 6} =
-3.{30:  5 - [-7. ( 3 ) +3] : 6 } =
-3.{ 30 :5 - [   -21     +3] :6 } =
-3-{30 :5 +18 : 6} =
-3-{ 6 + 3 } =
-3-{ 3 } =
-3 -3 =
-6