bsr
1) M= 2/5-4/3+7/2
M= 77/30
N= 2/3-5/3×3/2
N= -11/6
L= (-7/4+1/2):(2/7+1/4)
L= -7/3
P= -28/5/-21
P= 4/15
2) l'inverse de M : 30/77
3)l'opposé N: 11/-6
4)
a) M-N
= 77/30-(-11/6)
= 22/5
b)N×L
= -11/6×-7/3
= 77/18
c)M:N
= 77/30÷-11/6
= -7/5
voilà
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bsr
1) M= 2/5-4/3+7/2
M= 77/30
N= 2/3-5/3×3/2
N= -11/6
L= (-7/4+1/2):(2/7+1/4)
L= -7/3
P= -28/5/-21
P= 4/15
2) l'inverse de M : 30/77
3)l'opposé N: 11/-6
4)
a) M-N
= 77/30-(-11/6)
= 22/5
b)N×L
= -11/6×-7/3
= 77/18
c)M:N
= 77/30÷-11/6
= -7/5
voilà