Question

If 12a - 5 = 4a + 11 ,then a= what?

Answer 1

a = 2

Explanation:

12a - 5 = 4a + 11

correct the like terms

12a-4a = 11+5

8a = 16

divide by 8

8a/8 = 16/8

a = 2

Answer 2

a=2

Explanation:

12a - 5 = 4a + 11

Subtract 4a from each side

12a-4a - 5 = 4a-4a + 11

8a -5 = 11

Add 5 to each side

8a -5+5 = 11+5

8a = 16

8a/8 = 16/8

a =2