It is, in fact, an identity - which is an equation which is true for all values of the variable.
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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 + a + a - 2a = 3a - 2a = a
It is the expression 3 + 2a.
2a+5a+9a = 16a
3b -1