Answer:
1.
3a + 6 OR 3(a + 2)
2.
a = 6
Explanation:
(a + 2) + (a + 2) + (a + 2) = a + a + a + 2 + 2 + 2
= 3a + 6 or 3(a + 2)
24 = 3a + 6
24 - 6 = 3a
18 = 3a
18/3 = 6
sorry if I didn't show my working well enough
a + 2 + a+2 + a + 2 = 24 Combine the left
3a + 6 = 24 Subtract 6 from both sides.
3a = 24 - 6 Combine
3a = 18 Divide both sides by 3
3a/3 = 18/3
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