Answer:
a) -19/2
Explanation:
3(x+6)+6x+9=7x+8
3x + 18 + 6x + 9 = 7x + 8
3x + 6x - 7x = 8 - 18 - 9
2x = -19
2x/2 = -19/2
Therefore, x = -19/2
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