Bonsoir,
Ex36
a = 9-7 = 2
b = 8+13 = 21
c = -(15-6) = -9
d = 12+12 = 24
e = 15+12 = 27
f = -(4+11) = -15
g = -(8+5) = -13
h = 0
i = 13-8 = 5
j = -(9-5) = -4
Ex38
I = (2+5+7) - (8+3) = 14-11 = 3
J = (3+7+9) - (8+6) = 19-14 = 5
K = (9+11+25) - (15+16) = 45-31 = 14
