Răspuns :
6 x5 - 3 x ( 41 - 5 x7 ) + 4 x 7 =
30 - 3 x ( 41 - 35 ) + 28 =
30 - 3 x 6 + 28 =
30 - 18 + 28=
12 + 28 = 40
30 - 3 x ( 41 - 35 ) + 28 =
30 - 3 x 6 + 28 =
30 - 18 + 28=
12 + 28 = 40
6×5-3×(41-35)+4×7=
=6×5-3×6+4×7=
=30-18+28=
=18+28=
=40