Question

6(3a+1)-30=3(2a-4)

Answer 1

first you need to distribute
6(3a+1) becomes 18a +6
3(2a-4) becomes 6a-12

so then you get 18a-24 = 6a-12

then you need to combine like terms
add -6a to both sides...
12a-24= -12
add 24 to both sides
12a = 12
then divide both sides by 12 to find a
a = 1

Answer 2

18a + 6 - 30 = 6a - 12
18a - 24 = 6a - 12
18a - 6a = +24 - 12
12a = 12
a = 1