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2x + 5y = -2 ------> x3 = 6x + 15y = -6
sistem eliminasi (-)-----> 6x + 15 y = -6
6x - 4y = 32
------> 19y = -38
------> y = -38/19
------> y = -2
2x + 5y = -2
2x + 5.(-2) = -2
2x + (-10) = -2
2x = -2 + 10
2x = 8
x = 8/2
x = 4
5x+3y adalah? (x=4, y=(-2)
5. 4 + 3. (-2) =20 + (-6)
= 20 - 6
= 14
jadi, jawabannya b. 14
2x + 5y = -2 ------> x3
menjadi
6x - 4y = 32
6x + 15y = -6 _
- 19y = 38
y = -2
ambil salah satu garis
6x - 4y = 32
6x - 4(-2) =32
6x + 8 =32
6x = 32 -8
6x = 24
x = 4
maka hasil 5x + 3y = 5(4) + 3(-2)
= 20 -6
=14