Question

Solve for al
(21 – 3a) = 6 - a

Answer 1

The answer is 7.5

To get this answer you have to add like terms first. I added 3a so i ended up 21=6+2a

Subtract 6

15=2a now divide by 2

Answer is 7.5

Answer 2

7.5

Explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.