Question

Diketahui sistem persamaan x-3y=5 dan 2x-5y=9 nilai dari 3x+2y adalah

Answer 1

X - 3y = 5 dikali 2
2x - 5y = 9 dikali 1

2x - 6y = 10
2x - 5y = 9
_________ -
-y = 1
y = -1
x - 3y = 5
=> x -3(-1) = 5
=> x + 3 = 5
=> x = 2

3x + 2y = 3.2 + 2(-1) = 6 - 2 = 4