Answer:
2x + 7 = 23
15x + 9 = 144
6x + 14 = 56
4x + 7 = 31
7x + 2 = 16
Explanation:
2x = 16
x = 8
15x = 135
x = 9
6x = 42
x = 7
4x = 24
x = 6
7x = 14
x = 2
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