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Sagot :

VINS

bonjour

tu mettras niveau collège et pas lycée STP

4/3 - ( 1/2 + 7/8)

= 4/3 - ( 4/8 + 7 /8)

=  4/3 - 11 /8

=  32/24 - 33 /24

= - 1 /24

4/3 - 7/5 - ( 3/5 - 5 /7)

=  4/3 - 7/5 - ( 21/35 - 25/35)

=  4/3 - 7/5 + 4 /35

= 140/105 - 147/105 + 28/105

= 21/105 = 1 /5

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