Penyelesaian dari |x-1| + |x+3| = 7 Adalah...

Bab Nilai Mutlak
Matematika SMA Kelas X

|x - 1| + |x + 3| = 7

x - 1 + x + 3 = 7
2x = 7 - 2
x = 5/2

x - 1 + x + 3 = -7
2x = -7 -2
x = -9/2

HP = {-9/2, 5/2}