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NO. 2
x + 4 = 4x - 2 caranya dengan dikalikan silang ya.
2 4
4 (x + 4) = 2 (4x - 2)
4x + 16 = 8x - 4
4x - 8x = -4 - 16
-4x = -20
x = -20
-4
x = 5
NO. 3
3x + 5 < x + 13
3x - x < 13 - 5
2x < 8
x < 8
2
x < 4
NO. 4
2x - 5 = 7
2x = 7 + 5
2x = 12
x = 12
2
x = 6
NO. 5
5x - 1 = 2x + 11
5x - 2x = 11 + 1
3x = 12
x = 12
3
x = 4
NO. 6
3 (x + 1) - 5 = 13
3x + 3 - 5 = 13
3x = 13 - 3 + 5
3x = 15
x = 15
3
x = 5
semoga benar. aminnnnn