Sagot :
Hey,
a. 2x - 2 = 2
2x = 2 + 2 = 4
2x / 2 = 4 / 2
x = 2
b. 3z - 10 = 11
3z = 10 + 11 = 21
3z / 3 = 21 / 3
z = 7
c. 1 - y = 0
y = 0 + 1 = 1
y = 1
d. 1 + 5x = -39
5x = -39 - 1 = -40
5x / 5 = -40 / 5
x = -8
e. 2 + 3x = 9
3x = 9 - 2
3x = 7
3x / 3 = 7 / 3
x = 7/3
Réponse :
Bonjour
Explications étape par étape
Résolution d'équations
2x -2 = 2
2x = 2 + 2
2x = 4
x = 4/2
x = 2
3z -10 = 11
3z = +10 +11
3z = +21
z = 21/3
z = 7
1 -y = 0
-y = -1
y = 1
1 +5x = -39
5x = -1 -39
5x = -40
x = -40/5
x = -8
2 +3x = 9
+3x = -2 +9
3x = 7
x = 7/3