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Materi : Program LinearBahasan : Persamaan Linear 1 Variabel
Langkah - langkah dan Jawaban :
(1). 10 - 3x = 2(x + 3) + 5
10 - 3x = 2x + 6 + 5
- 2x - 3x = - 10 + 11
- 5x = 1
x = - 1/5
(2). (2x + 4) / 4 - (5x) / 8 = (2x + 4) / 6
Kalikan 24
24((2x + 4) / 4) - 24((5x) / 8) = 24((2x + 4) / 6)
6(2x + 4) - 3(5x) = 4(2x + 4)
12x + 24 - 15x = 8x + 16
- 3x - 8x = - 24 + 16
- 11x = - 8
x = 8/11
(3). (1/4)(x + 5) = 7
(x + 5) / 4 = 7
Kalikan 4
x + 5 = 28
x = 28 - 5
x = 23