tentukan himpunan penyelesainnya! 1. |x| + |x+3|=5 2.|x+7|=2 3.|4-x|=3 4.|x-2|=|x+5| persamaan nilai mutlak linear satu variabel

1. x + x + 3 = 5
=2x + 3 = 5
=2x = 5-3
= x = 2
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2

2. x + 7 = 2
=x = 2 -7
= x = -5

3. 4 - x = 3
= -x = 3-4
= -x = -1
= x = 1