Question

Tentukan nilai-nilai x yang memenuhi persamaan berikut:
a. 5(x-2)+3(x-1)=2(x+7)
b. X-2 = 5
x-1 4
c. 3 (x-7)-(x+1)=5
4

Answer 1

A. 5x-10 + 3x-3 = 2x+14
    5x+3x-10-3   = 2x+14
    8x-13=2x+14
    8x-2x=14+13
    6x = 27
      x = 27/6
b. soal b tolong diulang
c. 3(x-7)-(x+1)=5
    3x-21-x+1 = 5
    2x-20 = 5
    2x=5+20
    2x= 25
     x = 25/2

Answer 2

A.) 5x-10+3x-3=2x+14
     8x-13=2x+14
     6x=27
     x=27/6 = 9/2
b.) x-2 = 5
     x = 7
c.) (3x-21)-(x+1)=5
     2x-22=5
     2x = 27
     x = 27/2