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Matematika
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Tolong bantu nya sya. saya masih blm paham
1 Jawaban
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1. Jawaban Nik001
1) 4(x - 5) + 5 = 20x
4x - 20 + 5 = 20x
4x - 20x = -5 + 20
-16x = -15
x = -15/-16
x = 15/16
2) 3x - 5 = 25
3x = 25 + 5
3x = 30
x = 30/3
x = 10
3) 4x - 20 = 15 - 2x
4x + 2x = 15 + 20
6x = 35
x = 35/6
x = 5 5/6
4) 15 - 2x = x - 5
-2x - x = -5 - 15
-3x = -20
x = -20/-3
x = 6 2/3
5) 4 - 2(x - 1) = 3 (x + 5) + 2
4 - 2x + 2 = 3x + 15 + 2
-2x + 6 = 3x + 17
-2x - 3x = 17 - 6
-5x = 11
x = 11/-5
x = - 2 1/5