X+y=15x+3y= -3 eliminasikan variabel Xtlg djwb kakaaa​

x + y = 1 ….(1)

5x + 3y = -3 ….(2)

(1) × 5 5x + 5y = 5 …(1)'

(2) – (1)' -2y = -8

y = 4

substitusikan ke (1),

x + 4 = 1

x = -4 + 1

x = -3

(x,y) = (-3,4)

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