persamaan nilai mutlak linear satu variable A. X - 1 = 4 B.[ 2X - 1 ] - 5 = 0 C. -5 [ X - 7 ] + 2 = -13

A. X - 1 = 4
=> x = 4 + 1
=> x = 5

B. (2x - 1 ) -5 = 0
=> 2x - 1 = 5
=> 2x = 5 + 1
=> 2x = 6
=> x = 3

C. -5 ( x - 7) + 2 = -13
=> -5x + 35 + 2 = -13
=>-5x = -13 - 37
=> -5x = -50
=> x = 10

materi pers harga mutlak