## Algebra: A Combined Approach (4th Edition)

a = $\frac{25}{7}$
-4(a + 1) - 3a = -7(2a - 3) Distribute: -4a -4 - 3a = -14a + 21 Combine like terms: -7a - 4 = -14a + 21 Add 14a to both sides: 7a - 4 = 21 Add 4 to both sides: 7a = 25 Divide both sides by 7: a = $\frac{25}{7}$