178 - ( 123 - 64 ) x 78 : 2 x 64
= -147086
mk tính bảng máy tính rồi.chắc chắn 100%
k mk nha
178-(123-64) x 78 : 2 x 64
=178-59x78:2x64
=178-5382:2x64
=178-2691x64
=178-172224
= -17204
178+(123-64)x78:2x64=178+59x78:2x64=178+4602:2x64=178+2301x64=178+147264=147442
178-(123-64).78:2.64
=178-59.78:2.64
=178-147254
= -147086
chu y: dau cham cua mk la dau chia nha
178+(123-64)x78:2x64
=178+59x78:2x64
=178+4602:2x64
=178+147264
=147442