Answer: 18a + 43 is the simplest form
Step-by-step explanation:
4(3a + 7) + 3(2a + 5)
4 * 3 a= 12a
4 * 7 = 28
3 * 2a = 6a
3 * 5 = 15
12a + 28 + 6a + 15
12a + 6a = 18a
28 + 15 = 43
18a + 43
