Question

biti es

(*Barisan Aritmatika*)
2x-1, 5x-3, 4x+3,...
nilai x yg memenuhi adalah
a.) 1
b.) 2
c.) 3
d.) 4​

Answer 1

Jawaban:

B. 2

Penjelasan dengan langkah-langkah:

a = 2x -1

a + b = 5x - 3

a + 2b = 4x + 3

..

Subtitusi a = 2x - 1

2x - 1 + b = 5x - 3

b - 3x = -2

..

2x - 1 + 2b = 4x + 3

2b - 2x = 4

-b + x = -2

..

Eliminasi b

b - 3x = -2

-b + x = -2

____________+

0b - 2x = -4

x = 2

[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at}}[/tex]