Question

What is x? in the equation x-21=6

Answer 1

27

Explanation:

You would turn the equation around, so it is 21+6=27 and checking, 27-21=6

Answer 2

x = 27

Explanation:

x- 21 = 6

add 21 to both sides:

x = 27

Check your work by substitution:

27 - 21 = 6

6= 6

x = 27