Bonjour qlqn pourrait m’aider pour cette exercice merci

Bonjour,

Je te montre

2x - 2 = 2

2x = 2 + 2

2x = 4

x = 4/2 = 2

3z - 10 = 11

3z = 11 + 10

3z = 21

z = 21/3 = 7

1 - y = 0

- y = 0 - 1

- y = - 1

y = 1

1 + 5x = -39

5x = - 39 - 1

5x = -40

x = -40/5

x = -8

2 + 3z = 9

3z = 9 - 2

3z = 7

z = 7/3