bonjour.
merci de bien svp.
LES NOMBRES RELATIFS EXERCICE 4 Simplifier puis calculer : A = (+6)-(+7) + (-12)-(-4) + (+9) B= (-11) + (-14) - (+31)-(-21) + (+30) C = (-1) + (-2)-(-3) + (-4) + (+5)-(+6) D = (-23) + (+45) - (+67) + (+23)-(-45) EXERCICE 5 Calculer : EXERCICES 4A A = 11-25-31 +61-29 B = -15+41-72-50 +84 C=7 (1+6)-(7-4) D=-(9+5)-7-(6-4)
merci de bien svp.
LES NOMBRES RELATIFS EXERCICE 4 Simplifier puis calculer : A = (+6)-(+7) + (-12)-(-4) + (+9) B= (-11) + (-14) - (+31)-(-21) + (+30) C = (-1) + (-2)-(-3) + (-4) + (+5)-(+6) D = (-23) + (+45) - (+67) + (+23)-(-45) EXERCICE 5 Calculer : EXERCICES 4A A = 11-25-31 +61-29 B = -15+41-72-50 +84 C=7 (1+6)-(7-4) D=-(9+5)-7-(6-4)
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Explications étape par étape:
A = 6-7-12+4+9 = -19+19 = 0
B= -11-14-31+21+30 = -56+51 = -5
C = -1-2+3-4+5-6 = -13+8 = -5
D = -23+45-67+23+45 = -67
A = -25-31-29+11+61 = -85+72 = -13
B = -15-72-50+41+84 = -137+125 = -12
C = 7+42-7+4 = 46
D = -9-5-7-6+4 = -27+4 = -23