Question

Tentukan hp dari
2x+5y=21
3x+2y=15
Dgn metode
A.grafij
B.eliminasi dan
C.subtitusi

Answer 1

Eliminasi x
(2x+5y=21)3
(3x+2y=15)2

6x+15y=63
6x+4y=30
--------------- --
11y=27
y=27/11

subs y ke 2x+5y=21
2x + 5.27/11 = 21
2x + 135/11 = 21
2x = 21 × 11/135
2x = 7 × 11/45
2x = 77/45
x = 77/45 × 1/2
x = 77/90

HP = {77/90 , 22/11}