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Sagot :

SYLVIA38

Réponse :

Bonsoir

Explications étape par étape

1)

X-3 = -5

X = -5+3

X = -2

2)

2x = 7

X = 7/2

3)

X/5 = 3

X = 3*5

X = 15

4)

2x - 4 = 8

2x = 8+4

2x = 12

X = 12/2

X = 6

5)

2x + 3 = 5

2x = 5-3

2x = 2

X = 2/2

X = 1

6)

2x - 1 = 4x + 3

2x - 4x = 3 + 1

-2x = 4

X = -4/2

X = -2

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