x+2y=10 dan y=2x-5.Tentukan nilai x
Matematika
intan1629
Pertanyaan
x+2y=10 dan y=2x-5.Tentukan nilai x
2 Jawaban
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1. Jawaban EdiHeaven
y = 2x - 5
x + 2y = 10
x + 2(2x-5)=10
x + 4x - 10=10
5x = 10+10
x = 20/5
x=4 -
2. Jawaban dnnyz07
x + 2y = 10
2y = 10 - x
y = (10 - x) /2
(10 - x) /2 = 2x - 5
--------------------------- ×2
10 - x = 4x - 10
10 + 10 = 4x + x
20 = 5x
x = 20/5
x = 4
Jadi nilai x = 4