bonjour . calcul de maths nombre relatifs 5 eme ​

Réponse :

Explications étape par étape

A= -3+(-7)-(-3)+8-5+10

=-7+8-5+10

= 1-5+10

= -4+10

= 6

B= 135+(-154)-(-65)-46

= 135+(-154)+65-46

= -21+65-46

= 44-46

= -2

C= 1.98+(-5.2)-(-3.4)+0.02-4.5

= -3.22+3.4+0.02-4.5

= 0.22+0.02-4.5

= 0.24-4.5

= -4.26

D= 21-(-5+3)+(4-8)-21

= 21+2-4-21

= 2-4

= -2

Hello !

A = -3 + (-7) - (-3) + 8 - 5 + 10

A  = -3 + (-7) + (+3) + 8 -5 + 10

A = -10 + 3 + 3 + 10

A = +6

B = 135 + (-154) - (-65) - 46

B = 135 + (-154) + (+65) - 46

B = -19 + 19

B = 0

C = 1,98 + (-5,2) - (-3,4) + 0,02 - 4,5

C = 3,22 + (+3,4) + 0,02 - 4,5

C = 6,62 + (-4,48)

C = +2,14

D = 21 - (-5+3) + (4-8) - 21

D = 21 + (+5+3) + (-12) - 21

D = 21 + 8 + (-12) - 21

D = 17 - 21

D = -4

Bonne soirée :)