Question

10) 37. (27 +25)-27.(37+25)

11) 3.(-5+3)+7.(2-5)

12) -3.(2-7)-6.(8-5)

GIẢI HỘ MK NHA CÁC BẠN 

Answer 1

10) 37.(27+25)-27.(37+25)=37.27+37.25-27.37-27.25

=37.25-27.25=25(37-27)=25.10=250

11)3.(-5+3)+7(2+5)=3.(-2)+7.7=-6+49=43

12)-3.(2-7)-6(8-5)=-3.(-5)-6.3=15-18=-3

Answer 2

      

Answer 3

a) 37. (27 +25)-27.(37+25)

= 37.52-27.62

= (37-27).(52-62)

= 10.-10

=-100

b) 3.(-5+3)+7.(2-5)

= 3.-2+7.-3

= (3+7).[(-2)-(-3)]

=10.1

=10

c) -3.(2-7)-6.(8-5)

= -3.-5-6.3

= (-3-6).(-5-3)

=(-9).(-8)

=72

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Answer 4

a) 37.(27+25)-27.(37+25)

=37.27+37.25-27.37-27.25

=(37.25-27.37)+(37.25-27.25)

=37.25-27.25

=25(37-27)

=25.10

=250

b) 3.(-5+3)+7.(2-5)

=3.(-2)+7.-7

=(-6)+(-49)

=-55

c) -3.(2-7)-6.(8-5)

=(-3).(-5)-6.3

=15-18

=-3

tick nha