Bonsoir,est ce que vous pouvez m'aider pour l'exercice n°85

Bonjour,

a. t + 5 = 12

t = 12 - 5

t = 7

b. t - 4 = 20

t = 20 + 4

t = 24

c. 14 + t = 10

t = 10 - 14

t = - 4

d. 40 - t = 8

- t = 8 - 40

- t = - 32

t = 32

e. 4t = 24

t = 24/4

t = 6

f. 1/2t = 8

t = 8/0,5

t = 16

g. 3t = 2

t = 2/3

h. 2/3 + t = 10/3

t = 10/3 - 2/3

t = 8/3

i. t - 3/4 = 5/4

t = 5/4 + 3/4

t = 8/4

t = 2

Réponse :

Explications étape par étape

Bonsoir

Déterminer t pour que l’egalite Soit vraie :

t + 5 = 12

t = 12 - 5

t = 7

t - 4 = 20

t = 20 + 4

t = 24

14 + t = 10

t = 10 - 14

t = -4

40 - t = 8

t = 40 - 8

t = 32

4t = 24

t = 24/4

t = 6

t/2 = 8

t = 8 * 2

t = 16

3t = 2

t = 2/3

2/3 + t = 10/3

t = 10/3 - 2/3

t = 8/3

t - 3/4 = 5/4

t = 5/4 + 3/4

t = 8/4

t = 2