tolong dijawab yang bener pakai cara ya.. makasi

x - 3y - 5 = 0
x - 3y = 5

2x - 5y = 5
x - 3y = 5 |×2
maka
2x - 5y = 5
2x - 6y = 10
-----------------(-)
y = - 5

subtitusi
x - 3y = 5
x - 3(-5) = 5
x + 15 = 5
x = 5 - 15
x = - 10

x = p = - 10
y = q = - 5

nilai
2p - 5q
= 2(-10) - 5(-5)
= - 20 + 25
= 5

Jawabannya:
x-3y-5=0
x-3y=5

2x-5y=5 |×1|
x-3y=5 |×2|

2x-5y=5
2x-6y=10
-------------- -
1y= -5
y= -5/1
y= -5

subs.kan
x-3y=5
x-3(-5)=5
x+15=5
x=5-15
x= -10

x=p= -10
y=q= -5

jadi nilai
2p-5q
= 2(-10)-5(-5)
= -20+25
= 5

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