Question

3(a-5)=18

Answer 1

To solve for a.
Let's do an easy approach.
\[\large \frac{ \cancel 3(a-5) }{ \cancel 3 } = \frac{ 18 }{ 3 }\]
\[\large a - 5 = 18\]
\[\large a = 23\]

Answer 2

Oh oops.
I made a huge mistake

Answer 3

\[\large a - 5 = 6\]
\[\large a = 11\]
Sorry, my brain is still waking up >.<

Answer 4

another way is to distribute through the parenthesis
3(a - 5) = 18
3a - 15 = 18
3a = 18 + 15
3a = 33 (divide by 3)
a = 11