Question

1) 3(2+-1)<2+9=
2) 2(x-30)<4(x-2)

Answer 1

1) 3(2 + (-1)) < 2 + 9
    6 - 3 < 2 + 9
    3 < 11
2) 2(x - 30) < 4(x - 2)
    2x - 60 < 4x - 8
    2x - 4x < -8 - 60
    (2 - 4)x < -68
    -2x < -68
    x < -68/-2
    x < 34