LUSITANODU7
Answered

Bonjour pouriez vous m'aidez a resoudre merci
3x+7(8-x)+4=60+x
4(x-1)-3(2-x)=2

Sagot :

Bonsoir,

3x + 7(8 - x) + 4 = 60 + x

3x + 56 - 7x + 4 = 60 + x

3x - 7x - x = 60 - 56 - 4

-5x = 0

x = 0

4(x - 1) - 3(2 - x) = 2

4x - 4 - 6 + 3x = 2

4x + 3x = 2 + 4 + 6

7x = 12

x = 12/7