63 . (–25) + 25 . (–23)

= – 63 . 25 + 25 . (–23)

= 25. [–63 + (–23)]

= 25. (–86) = – (25.86) = –2150

a) (37 - 17) . (-5) + 23 . (-13 - 17)

= 20 . (-5) + 23 . (-30)

= (-100) + (-690)

= -790

b) 63 . ( - 25 ) + 25 . (-23)

= (-63) . 25 + 25 . (-23)

= 25[(-63) + (-23)]

= 25 . (-86)

= -2150

\(\text{(-4).(+125).(-25).(-6).(-8)}\)

\(=\left[\left(-4\right).\left(-25\right)\right].\left[125.\left(-8\right)\right].\left(-6\right)\)

\(=100.\left(-1000\right).\left(-6\right)\)

\(=-100000.\left(-6\right)=600000\)

\(\text{(-98).(1-246)-246.98}\)

\(=98.\left(245-246\right)\)

\(=98.\left(-1\right)\)

\(=-98\)

\(\text{63.(-25)+25.(-23)}\)

\(=25.\left[\left(-63\right)+\left(-23\right)\right]\)

\(=25.\left(-86\right)\)

\(=-2150\)

chúc bạn học tốt

a) 237 . ( -26 ) + 26 . 137

=  ( - 237 ) . 26 + 26 . 137

= 26 . [ ( -237 ) + 137 ]

= 26 . ( -100 )

= -2600

b) 63 . ( -25 ) + 25 . ( -23 )

= ( -63 ) . 25 + 25 . ( -23 )

= 25 . [ ( -63 ) + ( -23 ) ]

= 25 . ( -86 )

= -2150

237.(-26)+26.137= (-237+137).26= -100.26= -2600

237.(-26) + 26.137 = 26.137 - 26.237 = (137 - 237).26 = -100.26 = -2600

63.(-25) + 25.(-23) = -23.25 - 63.25 = (-23 - 63).25 = -89.25 = -2225

Ở đây bạn không yêu cầu tính bằng cách gì thì mình tính theo công thức bình thường nhé

\(\text{a. 237 . ( -26) + 26 . 137}\)

\(=\left(-6162\right)+3562\)

\(=-2600\)

\(\text{b. 63 . ( -25) + 25 . ( -23 )}\)

\(=\left(-1575\right)+\left(-575\right)\)

\(=-2150\)

a) 237.(-26)+26.137

=26.(-237+137)

=26.(-100)

=-2600

a. 237 . ( -26) + 26 . 137= -26. \(\left[-137+237\right]\)

=-26.100 -2600

b. 63 . ( -25) + 25 . ( -23 )

=25.\(\left[-63+\left(-23\right)\right]\) =25.(-86) =- 2150

237 . ( -26 ) + 26 . 137

= ( -237 ) . 26 + 26 . 137

= 26 . [ ( -237 ) + 137 ]

= 26 . ( -100 )

= -2600

63 . ( -25 ) + 25 . ( -23 )

= ( -63 ) . 25 + 25 . ( -23 )

= 25 . [ ( -63 ) + ( -23 ) ]

= 25 . ( -86 )

= -2150

237.(-26)+26.137 

= -237.26+26.137

= 26.(-237+137)

= 26.-100

= -2600

63.(-25)+25.(-23)

= -63.25+25.(-23)

= 25.[-63+(-23)]

= 25.(-86)

= -2150

237 . (-26)+26.137 

=-6162 + 3562

=-2600

*63 .(-25)+25.(-23)

=-1575 + -575

=-2150