penyeledaian dari sistem persamaan y=2x+5 dan x+3y=1 jawab pke caranya

x + 3y = 1
x + 3(2x + 5) = 1
x + 6x + 15 = 1
7x = -14
x = -14/7
x = -2

y = 2x + 5
y = 2(-2) + 5
y = 1

Himpunan penyelesaian = {-2,1}

y = 2x + 5
y-2x = 5

y-2x = 5
3y+x = 1

3y -6x = 15
3y+ x = 1
-
-7x = 14
x = -2

3y + x = 1
3y -2 = 1
3y = 1+2
y = 1

x=-2 , y=1