Sagot :
Bonsoir
Tu appelles tes nombres x et y
Tu as :
x +y = 52
x - y = 12
-2x -2y = -104
2x - 2y = 24
-4y = - 80
y = 20
x +y = 52
x +20 = 52
x = 52 -20
x = 32
x = 32 et y 20
32 +20 =52
32 -20 = 12
Tu appelles tes nombres x et y
Tu as :
x +y = 52
x - y = 12
-2x -2y = -104
2x - 2y = 24
-4y = - 80
y = 20
x +y = 52
x +20 = 52
x = 52 -20
x = 32
x = 32 et y 20
32 +20 =52
32 -20 = 12