Jika 4x - 3y = -17 dan 2x + 5y = 11, maka nilai y - x = ... *tolong dijawab plisss

4x - 3y = -17
2x + 5y = 11
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4x -3y = -17
4x + 10y = 22
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-13y = -39
y = 3

Substitusi y = 3 ke salah satu persamaan

4x - 3y = -17
4x -9 = -17
4x = -8
x = -2


Nilai y - x
= y - x
= 3 - (-2)
= 5

4x - 3y = -17 |x1
2x + 5y = 11 |x2

4x - 3y = -17
4x + 10y = 22
--------------------- -
-13y = -39
y= -39/-13
y=3

2x + 5y = 11
2x + 5.3 = 11
2x = 11 - 15
2x = -4
x = -2

y-x = 3-(-2) = 5