41 x 36 + 59 x 90 + 41 x 84 + 59 x 30

= 41 x (36 + 84) + 59 x (90 + 30)

= 41 x 120 + 59 x 120

= 120 x (41 + 59)
= 120 x 100

= 12000

   41 x 36 + 59 x 90 + 41 x 84  + 59 x 30

= 41 x ( 36 + 84 ) + 59 x ( 90 + 30 )

= 41 x 120 + 59 x 120

= 120 x ( 41 + 59 )

= 120 x 100

= 12 000

`@` `\text {Ans}`

`\downarrow`

\(\dfrac{3}{5}\times\dfrac{96}{59}+\dfrac{3}{5}\times\dfrac{22}{59}\)

\(=\dfrac{3}{5}\times\left(\dfrac{96}{59}+\dfrac{22}{59}\right)\)

\(=\dfrac{3}{5}\times2\)

\(=\dfrac{6}{5}\)

\(\dfrac{3}{5}.\dfrac{96}{59}+\dfrac{3}{5}.\dfrac{22}{59}\)

\(=\dfrac{3}{5}\left(\dfrac{96}{59}+\dfrac{22}{59}\right)\)

\(=\dfrac{3}{5}.2=\dfrac{6}{5}\)

41*36+59*90+41*84+59*30

=41*36+41*84+59*90+59*30

=41*(36+84)+59*(90+30)

=41*120+59*120

=(41+59)*120

=100*120=12 000

=41x36+41x84+59x90+59x30

=41x(36+84)+59x(90+30)

=41x120+59x120

=120x(41+59)

=120x100

=12000

15 × (4 - 7) - 15 × (5 - 3)

= 15 × (-3) - 15 × 2

= 15 × (-3 - 2)

= -15 × 5 

= -75

--------

73 × (8 - 59) - 59 × (8 - 73)

= 73 × 8 - 73 × 59 - 59 × 8 + 59 × 73

= 8 × (73 - 59) + 73 × (59 - 59)

= 8 × 14 + 73 × 0

= 8 × 14

= 112

15 x (4-7) - 15 x (5-3)

= 15 x (-3) - 15 x (-2)

= 15 x (-3 - (-2))

= 15 x (-1)

= -15

73 x (8-59) - 59 x (8-73)

= 73 x 8 - 59 x 73 - 59 x (-65)

= 73 x 8 - 59 x (73 - (-65))

= 73 x 8 - 59 x 8

= 8 x (73-59)

= 8 x 14

= 112

=-516

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Băng -516 đó bạn

C.29

11

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11

9/10