Question

Ada yang bisa mengerjakan soal no. 19 beserta caranya? Terimakasih :)

Answer 1

4x - 3y = 23 | x 4
6x + 4y = -8 | × -3

16× - 12y = 92
-18× - 12y = 24
-------------- -
34× = 68
x = 68 ÷ 34
× = 2

masukin
4(×) - 3y = 23
4(2) - 3y = 23
8 - 3y = 23
-3y = 23-8
- 3y = 15
y = 15 ÷ -3
y = -5

nilai dari
3(×) - y =
3(2) - 5 =
6 - 5 = 1