(– 166 + 852 – 429) – ( 852 + 429 – 166)
\(=-166+852-429-852-429+\)166
=\(\left(-166+166\right)+\left(852+-852\right)+\left(-429-429\right)\)
=\(0+0+\left(-858\right)\)
= - 858
\(\left(-166+852-429\right)-\left(852+429-166\right)\)
\(=-166+852-429-852-429+166\)
\(=\left(-166+166\right)+\left(852-852\right)-\left(429+429\right)\)
\(=-858\)
( -166 + 852 - 429 ) - ( 852 + 429 - 166 )
= 166 - 852 + 429 - 852 - 429 - 166
= -686 + ( -423 ) - 263
= 263 - 263
= 0
\(\left(-166+852-429\right)-\left(852+429-166\right)\)
\(=-166+852-429-852-429+166\)
\(=\left(-166+166\right)+\left(852-852\right)+\left(-429-429\right)\)
\(=-858\)
Ấy , tui sai chỗ nào nhỉ ?????
