Soal nomor 1
Sederhanakanlah.
(1) 0,5x – 1,8 – 1,3x + 2,4
(2) (2/3 x -3) + (x/2 + ¾)
(3) -4/3 (6x – 3/8)
(4) ¼(8+x) – 5/8(2x-16)
Jawaban:
(1) 0,5x – 1,8 – 1,3x + 2,4 = – 0,8 x + 0,6
(2) 2/3x – 3 + x/2 + ¾ = 5/6 x – 9/4
(3) -4/3 (6x – 3/8) = -8x + ½