Question

Rezolvati ecuatiile :

a) (4x-3) · (-3) = 6x + 23

b) 23x - 41= 7 (x+3)

c ) 44 - 13x = 100 - 2(8x-5)

d) 3 (x-2) - 2(x-3) = 5x-12

Answer 1

a)(4x-3) · (-3) = 6x + 23 ⇒12x+9=6x+23⇒12x-6x=23-9⇒6x=14⇒x=14:6⇒x=2(3)

c ) 44 - 13x = 100 - 2(8x-5) ⇒44 - 13x = 100 -16x+10⇒-13x+16x=10+100-44⇒3x=66⇒x=22

d) 3 (x-2) - 2(x-3) = 5x-12⇒3x-6-2x+6=5x-12⇒3x-2x-5x=-12-6+6⇒-4x=-12
⇒x=3
 Sper ca te-am ajutat!