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Pouvez-vous résoudre c’est 4 question svp
1) 4 (x-2)=7
2) 5(3+x)=-4
3) 3(2x-5)-7x=1
4) 5x+3=2x-5


Sagot :

MAUDMARINE

Bonjour

1) 4 (x-2)=7

4x - 8 = 7

4x = 7 + 8

4x = 15

x = 15/4

2) 5(3+x)=-4

15 + 5x = - 4

5x = - 4 - 15

5x = - 19

x = - 19/5

3) 3(2x-5)-7x=1

6x - 15 - 7x = 1

6x - 7x = 1 + 15

- x = 16

x = - 16

4) 5x+3=2x-5

5x - 2x = - 5 - 3

3x = - 8

x = - 8/3.