Question

Tolong yang jago matematika nomer 1 bagian d dengan metode eliminasi dan subtitusi

Answer 1

Verified answer

x+y=7

y-x=-4

---------- +

2y=3

y= 3/2

substitusi

x+y=7

x=7- 3/2

x= 14/2 - 3/2

x= 11/2

Answer 2

Verified answer

X + y = 7
y = x - 4
- x + y = - 4

x + y = 7
- x + y = - 4
-----------------(+)
2y = 3
y = 3/2

x + y = 7
x + 3/2 = 7
x = 7 - 3/2
x = 14/2 - 3/2
x = 11/2

hp = {11/2 , 3/2}