Question

Selesaikan persamaan berikut! A.4x+1=17 B.3x-5=x-9 c.8(x-2)=5(2x-4) D.9-3(2x-1)=3(2x+5)-3x

Answer 1

A. 4x + 1 = 17
          4x = 17-1
          4x = 16
            x = 16 : 4
            x = 4

B. 3x - 5 = x - 9
    3x - x = -9 + 5
         2x = -4
           x = -2

C. 8(x-2)   = 5(2x-4)
    8x - 16 = 10x - 20
    8x - 10x = -20 + 16
          -2x = -4
             x = 2

D. 9 - 3(2x-1) = 3(2x+5) - 3x
    9 - 6x + 3 = 6x +15 - 3x
       12 - 6x  = 3x + 15
       - 6x - 3x = 15- 12
             -9x  = 3
               x  = -3

Answer 2

A. 4x+1 = 17
4x = 17-1
4x = 16
x = 4
B. 3x-5 = x-9
3x+x = -9+5
4x = -4
x = -1
C. 8(x-2) = 5(2x-4)
8x-16 = 10x-20
8x-10x = -20+16
-2x = -4
x = 2
D. 9-3(2x-1) = 3(2x+5)-3x
9-6x+3 = 6x+15-3x
12-6x = 3x+15
-6x-3x = 15 -12
-9x = 3
x = -1/3