Question

4X-1=9. x-y=4 berapa kah nilai x dan y jawab yang benar ya

Answer 1

4x-1=9
4x=9+1
4x=10
x=10/4
x=5/2
x-y=4
-y=-x+4
y=x-4
y=5/2-8/2
y=-3/2

Answer 2

4x-1 = 9 , 4x = 10, x = 2,5 
x-y = 4,  x-4 = y,   2,5 - 4 = y,

y = - 1,5