Jawapan

  • Pengguna Brainly
2016-04-07T01:22:40+08:00
1) 2n + 3 < 5
    2n < 2
    n < 1

2) 2r - 9 > 5r - 3
    3r < - 6
    r < - 2

3) mp = 6 - m/p
    m = 6 - m
    2m = 6
    m = 3

4) ab + a - 3b - 3 = 0
    a(b+1) = 3b + 3
    b + 1 = 3b + 3
    2b = - 2
    b = - 1