Résoudre différentes équations: 10−11z=−9z+13 . simplifier au maximum: [tex] \frac{7}{10} [/tex] + [tex] \frac{7}{3} [/tex] b= [tex] \frac{1}{2} [/tex] b− [tex]

Salut,

soient

(1) : 10 - 11z = -9z + 13

(2) : (7/10) + (7/3)b = (1/2)b - (7/6)

(1) <=> -11z + 9z = 13 - 10

(1) <=> -2z = 3

(1) <=> z = -3/2 <=> z = -1.5

(2) <=> (7/3)b - (1/2)b = -(7/10) - (7/6)

(2) <=> (11/6)b = (-28/15)

(2) <=> b = (-28/15) ÷ (11/6) <=> b = -56/55

Si tu as des questions je reste dispo. A+