bonjour
a) ( + 48) + ( - 45) = 48 - 45 = 3
b. ( -14) + ( - 54) = - 14 - 54 = - 68
c. ( - 43 ) + ( + 41) = - 43 + 41 = - 2
d. ( + 27) + ( + 90) = 27 + 90 = 117
e. ( - 21) + ( - 11) = - 21 - 11 = - 32
f. ( - 10) + ( +15) = - 10+15 = 5
g. ( + 10) + ( + 15) = 10 + 15 = 25
h . ( - 40) + ( + 31) = - 40 + 31 = - 9
l. ( - 5 ) + ( - 46) = - 5 - 46 = - 51
A = ( - 8 ) - ( - 13)
= ( - 8) + ( + 13 )
= - 8 + 13
= 5
B = ( + 5 ) - ( - 4)
= ( + 5) + ( + 4 )
= 5 + 4 = 9
C = ( - 26 ) - ( + 2 )
= ( - 26 ) + ( - 2 )
= - 26 - 2 = - 28
D = ( - 2 ) - ( + 5 ) - ( - 4 )
= ( - 2 ) + ( - 5) + ( + 4 )
= - 2 - 5 + 4
= - 3
