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5a - 5 = 7 + 2a ( subtract 2a from both sides) 3a - 5 = 7 (add 5 to both sides) 3a = 12 ( divide both sides by 3) a = 4
4ab - 2a - 7
0.1458
2
To factorize 14a + 21, you first need to find the greatest common factor of the two terms, which in this case is 7. You can factor out 7 from both terms to get 7(2a + 3). Therefore, the factorized form of 14a + 21 is 7(2a + 3).