Question

u + 2 = 4 i already know that answer is 2, but you subtract 2 from each sides correct?

Answer 1

Yup subtract 2 from each sides

Answer 2

yes

Answer 3

u +2 -2 = 4-2

u = 2

Answer 4

Hint: this is the most obvious problem.
___ plus two = 4.

Answer 5

you could subtract 4 from each side

Answer 6

u + 2 = 4
-4 -4
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u - 2 = 0