Calculés... A =150-[200-4*(19+5*3)+22:2].............B =82_[15*3-4*(9+2)].........C = 180-4*[7+2*(8-3)+1]......D= 14,5-[10*0,28-5*(0,7-0,2)]........effectue A =
Mathématiques
christinewanne
Question
Calculés... A =150-[200-4*(19+5*3)+22:2].............B =82_[15*3-4*(9+2)].........C = 180-4*[7+2*(8-3)+1]......D= 14,5-[10*0,28-5*(0,7-0,2)]........effectue A =3/8*8/5+6/5.....B=1/3+5/3*7/10.....C= 3+1/5.....D= 3/5+7/10-1..........merci d avance-
1 Réponse
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1. Réponse maudmarine
A = 150 - [200 - 4 * (19 + 5 * 3) + 22 : 2]
A = 150 - [200 - 4 * (19 + 15) + 11]
A = 150 - [200 - 4 * (34) + 11]
A = 150 - [200 - 136 + 11]
A = 150 - 75
A = 75
B = 80 - [15 * 3 - 4 * (9 + 2)]
B = 80 - [45 - 4 * (18)]
B = 80 - (45 - 72)
B = 80 - (- 27)
B = 80 + 27
B = 107
C = 180 - 4 * [(7 + 2) * (8 - 3) + 1]
C = 180 - 4 * [9) * (5) + 1]
C = 180 - 4 * [45 + 1]
C = 180 - 4 * 46
C = 180 - 184
C = - 4
D = 14,5 - [10 * 0,28 - 5 * (0,7 - 0,2)]
D = 14,5 - [2,8 - 5 * (0,5)]
D = 14,5 - (2,8 - 2,5)
D = 14,5 - 0,3
D = 14,2
Effectue :
A = 3/8 * 8/5 + 6/5
A = 24/40 + 6/5
A = 24/40 + 6 x 8 / 5 x 8
A = 24/40 + 48/40
A = 72/40
A = 8 x 9 / 8 x 5
A = 9/5
B = 1/3 + 5/3 * 7/10
B = 1/3 + 35/30
B = 1 x 10 / 3 x 10 + 35/30
B = 10/30 + 35/30
B = 45/30
B = 15 x 3 / 15 x 2
B = 3/2
C = 3 + 1/5
C = 3 x 5 / 1 x 5 + 1/5
C = 15/5 + 1/5
C = 16/5
D = 3/5 + 7/10 - 1
D = 3 x 2 / 5 x 2 + 7/10 - 1 x 10 / 1 x 10
D = 6/10 + 7/10 - 10/10
D = - 3/10