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x = 2 - y ... (*)
2x - y = 2 Persamaan 2 (**)
Substitusi (*) ke (**)
2x - y = 2
2(2 - y) -y = 2
4 - 2y - y = 2
3y = 2
y = 2/3
x + y = 2
x = 2 - 2/3
x = 4/3
: 2x-y=2 — y = 2-2x
substitusikan:
y = 2-2x = x+y=2
= x+(2-2x)=2
= x+0=2
x= 2
untuk x=2 substitusikan keslh satu persamaan.
x=2 =2x-y = 2
= 2(2)-y=2
=4-y=2
-y = 2-4
-y=-2
y=2
maaf klw jwabnnya slh