4 (5a-8) + 2a is equivalent to 12a-6

4 (5a-8) + 2a

20a-32 + 2a

22a-32

if they are equivalent then they are equal

22a-32=12a-6 and we can solve for a subtract 12 a from each side

10 a - 32=-6 add 32 to each side

10 a = 26 divide by 10

a = 2.6

32 or 43 just div it by 10 or 5