qui peut me resoudre sa Svp je m'en sort pas du tout :o
Equation 5(x-1)-(2x-1) = 3-x
inéquation 4(2x-5) < 2x+5
systéme
3x-2y=8
x+4y=2
merci beaucoup
5(x-1)-(2x-1) = 3-x
5x-5-2x+1 = 3-x
3x-4 = 3-x
4x =7
x = 7/4
4(2x-5)<2x+5
8x-20<2x+5
6x<25
x<25/6
3x-2y=8
x+4y=2
6x-4y=16
x+4y=2
=> 7x = 18
7x=18
x+4y = 2
x=18/7
18/7 + 4y = 2
x=18/7
4y = 2 - 18/7
x=18/7
4y = 14/7 - 18/7
x = 18/7
4y = -4/7
x=18/7
y = -4/7 * 1/4
x=18/7
y= -1/7
