PERSAMAAN NILAI MUTLAK LINEAR SATU VARIABEL 1. [×-2] + [×+4] = 7 2.[×+2] + [3×] + [2×-5] = 8

Mapel : Matematika
Kelas : X SMA
Materi : Persamaan Mutlak

Pembahasan :
|x - 2| + |x + 4| = 7

x - 2 + x + 4 = 7
2x + 2 = 7
2x = 5
x = 5/2

x - 2 + x + 4 = -7
2x + 2 = -7
2x = -9
x = -9/2

Hp : {-9/2 , 5/2}

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|x + 2| + |3x| + |2x - 5| = 8

x + 2 + 3x + 2x - 5 = 8
6x - 3 = 8
6x = 11
x = 11/6

x + 2 + 3x + 2x - 5 = -8
6x - 3 = -8
6x = -5
x = -5/6

Hp : {-5/6 , 11/6}