Répondre :

A=-7-(2-7)+8 x 1/2
  =-7+5+4
  =2

B=5(3-8)-2(-1-3)
  =-25+8
  =-17

maudmarine
A = -7 - (2 - 7) + 8 x 1/2
A = -7 + 5 + 4
A = -7 + 9
A = 2

B = 5 (3 - 8) - 2 (-1 - 3)
B  = -25 + 8
B  = -17

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