Qu'elqu'un pourrait m'aider pour ces 2 équations :
A: 3(x + 4) = 5( x-2)
B: -4(3-x)= 2 ( 3x + 5)
3(x + 4) = 5( x-2)
12 + 10 = 5x - 3x
22 = 2x
x = 22/2
x = 11
-4(3-x) = 2( 3x + 5)
4x - 6x = 10 + 12
- 2x = 22
x = -22/2
x = -11
A = 3(x+4) = 5(x-2)
A = 3x +12 = 5x -10
A = 3x -5x = -12 -10
A = -2x = -22
A = x = -22/2 = 11
B = -4(3-x) = 2(3x+5)
B = -12 +4x = 6x +10
B = +4x -6x = +12 +10
B = -2x = 22
B = x= 22/2 = 11
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3(x + 4) = 5( x-2)
12 + 10 = 5x - 3x
22 = 2x
x = 22/2
x = 11
-4(3-x) = 2( 3x + 5)
4x - 6x = 10 + 12
- 2x = 22
x = -22/2
x = -11
A = 3(x+4) = 5(x-2)
A = 3x +12 = 5x -10
A = 3x -5x = -12 -10
A = -2x = -22
A = x = -22/2 = 11
B = -4(3-x) = 2(3x+5)
B = -12 +4x = 6x +10
B = +4x -6x = +12 +10
B = -2x = 22
B = x= 22/2 = 11