Question

Rezolvați ecuațiile: a) 12 : x = -3; d) x :(-5) = 0; b) -24 : (-x) = 0; e) 14 : (x+2) = -2; c) 8: (x-1) = -2 f) (x+1): 3 = -5. 104 Capitolul II​

Answer 1

a. 12 : x = -3 => 12 = -3x | : 3 => 4 = -x | • (-1) => x = -4 (met. alt.)

b. -24 : (-x) = 0 => -x = -24 :0 => -x=0 | • (-1) => x = 0

c. 8 : (x-1) = -2 => x-1 = 8 : (-2) => x-1 = -4 => x = -4+1 => x = -3

d. x : (-5) = 0 => x = 0 • (-5) => x = 0

e. 14 : (x+2) = -2 => x+2 = 14 : (-2) => x+2 = -7 => x = -7-2 => x= -9

f. (x+1) : 3 = -5 => x+1 = -5 • 3 => x+1 = -15 => x = -15 -1 => x = -16