Question

4a-5(5a+3)+6(a+6)=0
equations:

Answer 1

$4a + 5a + a - 5 + 6 \\ 10a + 1$

Answer 2

Hello mate,

Just open the brackets,

4a - 25a - 15 + 6a + 36 =0

Adding and subtracting the like terms and calculating,

-15a + 21 = 0

So, a = 7/5

hope this helps you out!