bantu yaaa untuk tugas besok

3x + 2y = 7

2x - 5y = 11
>> 2x = 5y + 11
>> x = 5y/2 + 11/2

subtitusikan x = 5y/2 + 11/2 ke pers. 3x + 2y = 7
3x + 2y = 7
3(5y/2 + 11/2) + 2y = 7
15y/2 + 33/2 + 2y = 7
(15y + 4y) / 2 = 14/2 - 33/2
19y = 14 - 33
19y = 14 - 33
19y = -19
y = -1

subtitusikan y = -1 ke pers.
2x - 5y = 11
2x + 5 = 11
2x = 6
x = 3