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x - 5y = -37 dikalikan 3
mejadi
3x + 2y = 8
3x - 15y = - 111 _ elimiasi
17y = -119
y = -119/17
y = -7
subtitusikan
3x + 2y = 8
3x +2(-7) = 8
3x - 14 = 8
3x = 8 + 14
3x = 22
x = 22/3
nialai dari
6x + 4y = 6(22/3) + 4(-7)
= 2 (22) - 28
= 44 - 28
= 16
jawabannnya 16
x-5y=-37 (dikali 3) persamaan 2
3x+2y=8
3x-15y=-111 _
-17y=-119
y=-119/-17
y=7
disubtitusikan ke persamaan 2
x-5y=-37
x-5(7)=-37
x-35=-37
x=-37+35
x=-2
jadi nilai 6x+4y=6(-2)+4(7)=-12+28=16