Réponse:
53. A= 10
B= -13
C= -40
54. D= -10
E= -23
F= -1,8
n°53:
A= 25+(-8) +(-14) +7
A= 25+7+(-8) +(-14)
A= 32+(-22)
A= 10
B= -9, 5+(-20) +17, 6+(-3, 5) +2, 4
B= -9, 5+(-20) +(-3, 5) +17, 6+2, 4
B= -33+20
C= -75+42+16+(-23)
C= -75+(-23) +42+16
C= - 98+58
n°54:
D= -36+14+(-7) +(-9) +28
D= -36+(-7) +(-9) +14+28
D= -52+42
D= -10
E= 75+(-26) +(-84) +12
E= -26+(-84) +75+12
E= -110+87
F= -4, 6+(-8, 3) +6, 5+4, 6
F= -12, 9+11, 1
F= -1, 8
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Réponse:
53. A= 10
B= -13
C= -40
54. D= -10
E= -23
F= -1,8
n°53:
A= 25+(-8) +(-14) +7
A= 25+7+(-8) +(-14)
A= 32+(-22)
A= 10
B= -9, 5+(-20) +17, 6+(-3, 5) +2, 4
B= -9, 5+(-20) +(-3, 5) +17, 6+2, 4
B= -33+20
B= -13
C= -75+42+16+(-23)
C= -75+(-23) +42+16
C= - 98+58
C= -40
n°54:
D= -36+14+(-7) +(-9) +28
D= -36+(-7) +(-9) +14+28
D= -52+42
D= -10
E= 75+(-26) +(-84) +12
E= -26+(-84) +75+12
E= -110+87
E= -23
F= -4, 6+(-8, 3) +6, 5+4, 6
F= -12, 9+11, 1
F= -1, 8