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Sagot :

VINS

bonjour

ce sont les 3 mêmes donc je te montre

4 ( 10 - x ) = 40 - 4 x

si x= 4.5  alors 40 - 4 * 4.5 = 40 - 18 =  22

si  x =  - 3 , alors  40 - 3 * - 3 = 40 + 9 =  49

si x = 2/3 , alors 40 - 4*2/3 = 40 - 8/3 = 120/3 - 8/3 =  112/3

voilà continue  

Bonjour,

a)

4(10 -4,5)

=40 - 18 = 22

b)

4(10 +3)

= 40 +12

=52

c) 4( 10-2/3)

= 4(30/3 -2/3)

= 4* 28/3

= 112/3

a)

-36 -6 = -42

b)

- 100 +10 = - 90

c)

-4/49 -2/7

= -4/49 - 14/49

= -18/49

a)

(5*3) -( 729 -9 +7)

=  15 - 727

= -712

b)

( 5*-3) -( -727 +9 -8)

= -15 +727 -9 +8

= 711

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