Réponse :
slt
Explications étape par étape :
43 a.)
5x +7 = 2x -2
-7 -7
5x = 2x - 9
-2x -2x
3x = -9
43 b.)
3x +2 = x - 10
-2 -2
3x = x -10
-1x -x
2x = -10
44 a.)
2x -5 = 5x + 1
+5 +5
2x = 5x + 6
-5x -5x
-3x = +6
44 b.)
3 - 7x = 3x +2
+7x +7x
3 = 10x +2
1 = 10x
45 a.)
5x -6 = -x +3
+6 +6
5x = -x +9
+1x +1x
6x = +9
45 b.)
2x - 1/3 = 1
(la jsp)
