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Équation 1er degré
a) x+8 = 9
b) 11 = x+2
c) -x-5 = 2
d) 2x + 1 = 3
Aidez moi svp je comprend pas !

Sagot :

MAUDMARINE

Bonjour

a) x+8 = 9

x = 9 - 8

x = 1

b) 11 = x+2

x = 11 - 2

x = 9

c) -x-5 = 2

- x = 2 + 5

- x = 7

x = - 7

d) 2x + 1 = 3

2x = 3 - 1

2x = 2

x = 2/2

x = 1.