Bonjour
1)
3
3+3 = 6
6*2 = 12
12 - 6 =6
2)
-2
1
2
2-(-4) = 2+4 = 6
3)
5
8
16
6
4)
x
x+3
2(x+3) = 2x+6
2x+6 -2x = 6
