Aide moi en Maths s'il vous plaît c'est exercice 1 je dois rendre se devoir. Aide moi plus tôt possi.... Pergunta de ideia deTenzin1

Tenzin1 @Tenzin1

May 2019 1 126 Report

Aide moi en Maths s'il vous plaît c'est exercice 1 je dois rendre se devoir. Aide moi plus tôt possible. Merci

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rosiemuller2000

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Coucou

exercice 1

a) x- 1/2 = 2/5
x = 2/5 + 1/2
x= 4/10 + 5/10
x= 9/10
x= 0,9

b) 4/7x = 9/14
x= (9/14)/(4/7)
x= 9/8

c) 7/9y +5 = 8
7/9y = 8-5
7/9y = 3
y= 3/(7/9)
y= 27/7

d) 2x/7 + 3 /14 = x/7 -1/14
2x/7 -x/7 = -1/14 - 3/14
x/7 = -4/14
x= -2/7 * 7
x= -2

voila j espere t avoir aider

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