Question

tính

a, 96.(-21)+(-142).48

b, -199+52.(-149)+(-149).47

Answer 1

a) 96. ( -21 ) + ( -142 ) . 48

=( -2016 ) + ( - 6816 )

= -8832

​b) -199 + 52 . ( -149 ) + ( -149 ) . 47

= -199 + ( -149 ) . ( 52 + 47 )

​= -199 + ( -149 ) . 99

​= -199 + ( - 14751 )

= -14552

Answer 2

a, 96. ( -21) + ( -142 ) .48

= 48 . (-42) + (-142) .48 

= 48.[(-42) + (-142)] = 48 .(-182) = 8736

b, -199 + 52.(-149)+(-149).47

= (-50) + (-149) +  52.(-149)+(-149).47

= (-50) + (-149)( 1+ 52 + 47 )

= (-50) + (-149).100 

= (-50) + (-14900) 

= -14950

Answer 3

-8832

-14552

tich nha