Sagot :
Salut !!
Résolvons dans R :
• 3x+4 = 2x-1
3x-2x = -1 -4
x = -5
• 2x-1 = 7
2x = 7+1
2x = 8
x = 8/2
x = 4
• 4x+1 = 2x+3
4x-2x = 3-1
2x = 2
x = 2/2
x = 1
Bonsoir,
3x + 4 = 2x - 1
3x - 2x = -1 - 4
x = -5
2x - 1 = 7
2x = 7 + 1
2x = 8
x = 8/2
x = 4
4x + 1 = 2x + 3
4x - 2x = 3 - 1
2x = 2
x= 2/2
x= 1
En espérant t'avoir aidé,