Question

3x-y=24x+y=5 metoda podstawiania

Answer 1

3x-y=24
x+y=5

3x-y=24
x=5-y

3(5-y)-y=24
x=5-y

15-3y-y=24
x=5-y

-4y=24-15
x=5-y

-4y=9 / :(-4)
x=5-y

y=9/4=2 ¹/₄
x=5-2 ¹/₄

x=2 ³/₄
y=2 ¹/₄