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a = 1
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We have, 2a + 24 = 30or, 2a = 30-24or, 2a = 6or, a = 6/2 = 3.Therefore, a equals 3 or simply a=3
= a + b - 2
A equals 4 because 4 plus 6 is 10 or 10 minus 6 is 4.