Question

Jika x-3 dan 5x + 4y = -13 maka nilai y sama dengan ...
a. -3
b. -5
c. -6
d. -7
e. -8

tolong bantuan ya :)

Answer 1

X - 3 = 0
x = 3

5x + 4y = -13
<=> 5(3) + 4y = -13
<=> 15 + 4y = -13
<=> 4y = -13-15
<=> 4y = -28
<=> y = -7

jadi y = -7 jawaban D