Sagot :
Bonjour,
8y - 4 = -8 + 13y
-4 +8 = 13y -8y
4 = 5y
y= 4/5 = 0,8
7x - (4x + 3) = 5(x - 3) + 2
7x-4x -3 = 5x -15 +2
3x -3 = 5x -13
-3+13 = 5x +3x
10 = 8x
x= 10/8 = 5/4 =1,25
8y - 4 = -8 + 13y
8y - 13y = -8 + 4
-5y = -4
y = -4/-5
y=4/5
7x - (4x + 3) = 5(x - 3) + 2
7x-4x -3 = 5x -15 +2
3x -3 = 5x -13
-3+13 = 5x +3x
10 = 8x
x= 10/8
x= 5/4