Bonjour;
a)
x = 5+7
x = 12
b)
x= -9+2
x = -7
c)
y = 32/4
y = 8
d)
y = -63/-7
y = 9
e)
3x = 11-2
3x = 9
x = 9/3
x = 3
f)
5x-2x = -2 -7
3x = -9
x = -9/3
x = -3
g)
3-2 = 3x +7x
1 = 10x
x = 1/10
h)
5x+x = 3+6
6x = 9
x = 9/6
x = 1,5
i)
4x+8 =x-1
4x-x = -1 -8
j)
5y +3 = 3y -3 -2
5y-3y = -3-2-3
2y = -8
y = -8/2
y = -4
