Question 683446
a + 3 = 6
subtract 3 from both sides to isolate the a variable
a + 3 - 3 = 6 - 3
{{{highlight_green(a = 3)}}}
.....................
Have more questions? 
Email: HomeworkHelpers@readingboosters.com
Delighted to help.
-Reading Boosters
Website: www.MyHomeworkAnswers.com 
Wanting for others what we want for ourselves.