Matematika Bisnis Aljabar

Tugas Personal ke-1

  1. Selesaikan persamaan berikut :
    1. 7 + (4x/9) = x/2

Jawaban :

7+ 22. x/32 = x/2

 (22. x) + (32) 7/3= x/2

(4x) + 9.7/32 = x/2

(4x) + 63/32 = x/2

2(4x+63) = 9x

2.4x + 2.63 = 9x

8x + 126 = 9x

(8x + 126 ) + (-8x) = 9x +( -8x )

8x + 126 – 8x = x

8x -8x+126 = x

126 = x

x= 126

  1. (2x)1/2 + 3 = 8

Jawaban :

21/2 .x1/2 + 3 = 8

(21/2 .x1/2 + 3) + (-3) = 8 (-3)

(21/2).(x1/2) = 52

 

22/2 .x2/2   = 25

2x=25

x = 25/2

x = 12,5

 

  1. Sederhanakan persamaan berikut :

(8x-4y+2) + (3x+2y-5)

Jawaban :

8x-4y+2+3x+2y-5

8x+3x-4y+2y+2-5

11x-2y-3

Regards,

Chandra NIM 1601285866