Question

Tentukan himpunan penyelesaian persamaan berikut!
a.|x-2| =6
b.|3x-5| =7
c.|x| + |x-5| =7
d.|2x-2| + |3x-8| =5
e.|x-1| + |2x| + |3x+1| =6

Answer 1

A) x = 4
b) x = 4
c) x = 6
d) x = 3
e) x = 1

Answer 2

A.x=6+2 =8
b3x-5=7
  3x=7+5
  3x=12
   x=4
c x + x-5 = 7
  2x-5=7
  2x=7+5
  2x=12
   x=6
d 2x-2 + 3x-8 =5
   5x-10= 5
  5x =10+5
  5x=15
  x=3
e.x-1+2x+3x+1=6
  4x+2=6
  4x=6-2
 4 x=4
  x=1