Răspuns :
{ 32 + 4 × [ 8 × 2 : 4 + 15 : ( 3 + 48 : 8 : 3 ) ] } × 7 = 420
{ 32 + 4 × [ 16 : 4 + 15 : ( 3 + 6 : 3 ) ] } × 7 = 420
{ 32 + 4 × [ 4 + 15 : ( 3 + 2 ) ] } × 7 = 420
[ 32 + 4 × ( 4 + 15 : 5 ) ] × 7 = 420
[ 32 + 4 × ( 4 + 3 ) ] × 7 = 420
( 32 + 4 × 7 ) × 7 = 420
( 32 + 28 ) × 7 = 420
60 × 7 = 420
420 = 420