Tugas 2 PLSV
1.a.X + 15 = 24
X + 15 - 15 = 24 - 15
X = 9
b.X - 7 = 13
X - 7 + 7 = 13 + 7
X = 20
2.a.14 - X = 9
14 - 9 - X = 0
5 - X = 0
-X = -5
X = 5
b.25 -X = -6
25 + 6 -X = 0
31 - X = 0
-X = - 31
X = 31
3.a.2X + 1 = 17
2X - 17 + 1 = 0
2X - 16 = 0
2X = 16
X = 16 : 2 = 8
b.3X - 10 = -4
3X + 4 - 10 = 0
3X - 6 =0
3X = 6
X = 6 : 3 = 2
4.a.3X + 4 = 12 - X
3X + X + 4 = 12
4X + 4 = 12
4X = 12 - 4 = 8
X = 2
b.5X - 2 = 2X = 19
5X - 2X - 2 = 19
3X - 2 = 19
3X = 19 + 2 = 21
X = 7
5.a.2 (X + 2 ) = X -1
2.X + 2.2 = X -1
2X + 4 = X -1
1 + 4 = X - 2X
5 = -X
X = -5
b. 5 ( X - 5 ) = 2 X - 7
5.X - 5.-5 = 2X - 7
5X - 25X = 2X - 7
5X - 2X = 25 - 7
3X = 18
X = 6
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