bonjour
A. - 5 - 28 : ( - 7 ) = - 5 + 4 = - 1
B. - 64 : ( - 8 ) - ( - 2 ) = 8 + 2 = 10
C. 4 x ( - 8 - ( - 6 ) = 4 x ( - 8 + 6 ) = 4 x ( - 2 ) = - 8
D. ( - 3 - 7 ) x 5 - 11 = ( - 10 ) x 5 - 11 ) = - 50 - 11 = - 61
A. - 4 : 2 + 1 = - 2 + 1 = - 1
B . - 2 - ( - 81 ) : ( - 9 ) = - 2 - ( 9 ) = - 2 - 9 = - 11
C. - 6 + ( - 21) : ( - 7 ) = - 6 + 3 = - 3
D. = - 2 : ( 12 - 7 ) = - 2 ; 5 = - 2/5
