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2x - 1 > x + 2
2x - x > 2 + 1
x > 3
no 4)
3x + 1 > x + 14
3x - x > 14 - 1
2x > 13
x > 13/2
no 5)
suatu bilangan anggap saja x
a) x . 5 + 4 < 19
5x + 4 < 19
b) 5x + 4 < 19
5x < 15
x < 3