Question

Хелп ми плеаз плеаз пж

Answer 1

1) y = x + 2       y = 3x - 3

3x - 3 = x + 2

3x - x = 2 + 3

2x = 5

x = 2,5

y = 2,5 + 2 = 4,5

Ответ : (2,5 ; 4,5)

$2) \left \{ {{4x+5t=1}|*(-5) \atop {5x+7t=5=2}|*4} \right.\\\\+\left \{ {{-20x-25t=-5} \atop {20x+28t=8}} \right.\\--------\\ 3t=3\\\\t=1\\\\4x=1-5t=1-5*1=-4\\\\x=-1\\\\Otvet:\boxed{x=-1;t=1}$