jika 1/4(x +10)=3/8(x-2)+5/8,maka Nilai (x-9) adalah... a. 20 b. 12 c. 27 d. 29
Matematika
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Pertanyaan
jika 1/4(x +10)=3/8(x-2)+5/8,maka Nilai (x-9) adalah...
a. 20
b. 12
c. 27
d. 29
a. 20
b. 12
c. 27
d. 29
1 Jawaban
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1. Jawaban Anonyme
Bab Persamaan Linear
Matematika SMP Kelas VII
(1/4) (x + 10) = (3/8) (x - 2) + 5/8
✩✩ dikali 8 ✩✩
2 (x + 10) = 3 (x - 2) + 5
2x + 20 = 3x - 6 + 5
2x + 20 = 3x - 1
2x - 3x = - 1 - 20
-x = -21
x = 21
x - 9
= 21 - 9
= 12
✩✩ B ✩✩