Question

1. -2X + 5 = - (X + 9)
2. 3(2X - 3) - 2(1-X) - (X+3) = 0.
Tolong bntu ya. sma cara nya.

Answer 1

1. -2x + 5 = -(x + 9)
    -2x + 5 = -x - 9
   <=> -2x + x = -9 - 5
   <=> -x = -14
   <=> x = 14

2. 3(2x - 3) - 2(1 - x) - (x + 3) = 0
   <=> 6x - 9 -2 + 2x - x - 3 = 0
   <=> 6x + 2x - x - 9 - 2 - 3 = 0
   <=> 7x - 14 = 0
   <=> 7x = 14
   <=> x = 14/7
   <=> x = 2

Answer 2

1. -2X + 5 = - (X + 9)
-2X + 5 = -x -9
5+9 = -x + 2x
14 = x

2. 3(2X - 3) - 2(1-X) - (X+3) = 0.
6x - 9 - 2+ 2x - X - 3= 0
6x + 2x -x = 9 +2 +3
7x = 14
x = 14 : 7 = 2


Maaf kalo ada yg salah