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Sagot :

Bonsoir,

a) -5x + 3 = -3x + 2

3 -2 = -3x +5x

1 = 2x

2x=1

x= 1/2

x= 0,5

b) 3(x + 4) = −(x + 5) + 2​

3x+12 = -x -5 +2

3x+x = -5 +2 -12

4x= -15

x= -15/4

x = -3,75

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