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Sagot :

a) 48 x 7 = (40+8)x7
             = 40x7+8x7
             =280+56=336
b) 48 x 7 = (50-2)x7
             =50x7-2x7
              =350-14=336
a) 48 x 7
= ( 40 + 8 ) x 7
=(40x7)+(8x7)
=280+56
=336

 b) 48 x 7
= ( 50 - 2 ) x 7
=(50x7)-(2x7)
=350-14
=336

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