BERE38
Answered

Résoudre algébriquement dans |R* :
a. 1/x + 8/7 = 0
b. 1/x - 4/7 = 0
Merci d'avance... ​

Sagot :

AYUDA

a. 1/x =- 8/7

7 = -8x

x = -7/8

b.1/x = 4/7

4x = 7

x = 7/4

VINS

bonjour,

1/x + 8/7 = 0

1 /x = -  8/7

- 8 x =  7

x = - 7/8

1 /x - 4 /7 = 0

1 / x = 4 /7

4 x = 7

x = 7/4