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1. 4x + 3 > x - 9
4x - x > -9 - 3
3x > -12
x > -4
2. 12 - 3x = 4 + x
12 - 4 = x + 3x
8 = 4x
x = 8/4
= 2
semoga bermanfaat :)
4x - x > - 9 - 3
3x > -12
x > -4
2) 12 -3x = 4 + x
-3x - x = 4 -12
- 4x = -8
-x = -2
x = 2