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Sagot :

RAYANAGALAEV

Réponse:

exercice 2

1 vrai

2 faux

3 vrai

4 faux

5 vrai

MILLEETUNE
Bonjour,

Ex 1:

a) x+4=6
x=6-4
x=2
b) x-10=-4x
x+4x=10
5x=10
5x/5=10/5
x=2
c)3x-6=x
3x-x=6
2x=6
2x/2=6/2
x=3
d)4x=x-9
4x-x=-9
3x=-9
3x/3=-9/3
x =-3
e) 7x+3=-2x-4
7x+2x=-3-4
9x=-7
9x/9=-7/9
x=-7/9

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