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x + y = 6 -
x = 2
cari nilai y, maka subtitusikan nilai x
x + y = 6
2 + y = 6
2-2+y = 6-2
y = 4
Maka HP = {x,y} = {2,4}
2x+y=8 →-x=-2 →x=2
substitusi kan (2)+y=6→y=6-2→y=4
HP {2.4}