-23.65+23.21-58.23
=23.(-65+21-23)
= 23.(-67)= -1541
-23.63+23.21-58.23
=-63.23+23.21-58.23
=(-63+21-58).23
=-100.23
=-2300
-23.63+23.21-58.23
= -23.63-(-23).21+(-58).23
=-23.63-(-23).21+58.(-23)
=-23.(63-21+58)
=-23.100
=-2300
~ HỌC TỐT ~
-23.63+23.21-58.23
= 23.(-63)+23.21-58.23
=23.(-63+23-58)
=23.(-40-58)
=23.(-98)
=-2254