Question

Tolonglah aku kakak kakak yg baik hati

Answer 1

2x - 3y = -1 |×1|

x - 4y = 2 | ×2|

➖➖➖➖➖➖➖➖➖

2x - 3y = -1

2x - 8y = 4 -

➖➖➖➖➖➖➖

5y = -5

y = -1

2x - 3y = -1

2x - 3(-1) = -1

2x - (-3) = -1

2x + 3 = -1

2x = -1 - 3

2x = -4

x = -2

Jadi x - y = -2 - (-1)

= -2 + 1

= -1

Semoga membantu yaaa