Question

tolong kak pr pake cara

hitunglah 1/2x + 1/3y=1
x + y=4​

Answer 1

1/2x + 1/3y=1

x + y = 4

x = 4 - y

1/2 (4-y)

2 -y/2 + 1/3y = 1

-y/2 + 1/3y = 1 - 2

-y/2 + 1/3y = -1

-y/2 . 6 + 1/3y . 6 = -1 . 6

-3y + 2y = -6

-y = -6

y = 6

x + y = 4

x = 4 - y

x = 4 - 6

x = -2

1/2(-2) + 1/3(6) = 1

-1 + 2 = 1

1 = 1