Binus online learning

Tugas Personal ke-1

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

Jawaban :

7+ 2^2. x/3² = x/2

 (2^2. x) + (3²) 7/3²  = 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 :

2^1/2 .x^1/2 + 3 = 8

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

(2^1/2)²  .(x^1/2)²   = 5²

2^2/2 .x^2/2   = 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