9 a + 2 = 4 a − 18 / − 2 9 a = 4 a − 20 / − 4 a 5 a = − 20 / : 5 a = − 4
9 a + 2 = 4 a − 18 9 a − 4 a = − 18 − 2 5 a = − 20∣ : 5 a = − 4
The value of a that satisfies the equation 9 a + 2 = 4 a − 18 is a = − 4 . This is found by isolating a through algebraic manipulation of the equation. Step by step, we subtract 4 a , then subtract 2, and divide by 5.
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