jika [tex] \frac{1}{2} [/tex] - [tex] \frac{2}{3} [/tex] x = [tex] \frac{1}{4} [/tex] - x maka nilai dari [tex] \frac{x}{3} [/tex] =

Mapel : Matematika
Kelas : VIII SMP
Bab : PLSV

Pembahasan :
1/2 - 2/3x = 1/4 - x
-2/3x + x = 1/4 - 1/2
1/3x = -1/4
4x = -3
x = -3/4

Maka...
x/3
= (-3/4)/3
= -3/12
= -1/4

½ - ⅔ x = ¼ - x
(3 - 4x)/6 = (1 - 4x)/4
4(3 - 4x) = 6(1 - 4x)
12 - 16x = 6 - 24x
-16x + 24x = 6 - 12
8x = -6
x = -6/8
x = - ¾

Maka nilai dari
= x/3
= - ¾× ⅓
= - ¼.

Semoga berguna +_+