tolong dong 5x-2y=21 -x+2y=-9 eliminasi variabel x eliminasi variabel y

Eliminasi X
5x-2y = 21 | x-1 -> -5x + 2y = -21
-x-2y = -9 | x5 -> -5x + 10 y = -45
____________-
-8y = 24
y = 24
___
-8
= -3 Eliminasi Y 5x-2y = 21 | x2 -> 10x - 4y = 42 -x-2y = -9 | x5 -> -2x + 4y = -18 ____________- 12x = 60 X = 60 ___ 12 = 5