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Sagot :

FBJCSG

Bonsoir c'est ma réponse

A=(2,5+2)×(6,5-2)

= 4,5×4,5

=20,25

B=2,2×4+27,15÷3

=8,8×9,05

=17,85

C=15,5÷5×2-3×1,2+2

=(15,5x2)-15-3x1,2+2

=31-15-3x1,2+2

=6,2-3x1,2+2

=6,2-3,6+2

=2,6+2

=4,6

D=3,4×102-3,4×2

=346,8 - 6,8

=340

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