Jawaban:
x+y=10
x-y=4
Materi: PLDV
Solusi : Cara Substitusi
x=10-y ......(1)
persamaan (1) substitusikan ke :
(10-y)-y=4
10 - y - y = 4
10 - 2y = 4
- 2y = 4 - 10
- 2y = -6
y = -6 / -2
y = 3. .......(2)
persamaan (2) substitusikan ke salah satu persamaan
x +y =10
x + 3 = 10
x = 10 - 3
x = 7
jadi, diperoleh x=7 dan y=3
Good Luck
Ahmad Riyadin, S.Pd.
" Life is not a problem to be solved but a reality to be experienced! "
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Jawaban:
x+y=10
x-y=4
Materi: PLDV
Solusi : Cara Substitusi
x+y=10
x=10-y ......(1)
persamaan (1) substitusikan ke :
x-y=4
(10-y)-y=4
10 - y - y = 4
10 - 2y = 4
- 2y = 4 - 10
- 2y = -6
y = -6 / -2
y = 3. .......(2)
persamaan (2) substitusikan ke salah satu persamaan
x +y =10
x + 3 = 10
x = 10 - 3
x = 7
jadi, diperoleh x=7 dan y=3
Good Luck
Ahmad Riyadin, S.Pd.