Question

A + 3 / 2 = 25 - 5-6a

Answer 1

If the question is :

$\frac{a + 3}{2} = 25 - 5 - 6a$

Then, the solution will be,

$a + 3 = 50 - 10 - 12a \\ \\ a + 12a = 50 - 10 - 3 \\ \\ 13a = 37 \\ \\ a = \frac{37}{13} \\ \\ a = 2.84$

And if the question is like :

$a + \frac{3}{2} = 25 - 5 - 6a$

So, the solution will be,

$\frac{2a + 3}{2} = 25 - 5 - 6a \\ \\ 2a + 3 = 50 - 10 - 12a \\ \\ 2a + 12a = 50 - 10 - 3 \\ \\ 14a = 37 \\ \\ a = \frac{37}{14} \\ \\ a = 2.64$

Answer 2

a + 3 / 2 = 25 - 5 - 6a

=> a + 3 = 2( 20 - 6a )

=> a + 3 = 40 - 12a

=> 12a + a = 40 - 3


=> 13a = 37


a = 37/13