Three more than twice a number k

2k+3

is your answer/expression

The number will be x

So three more than twice a number is

2x+3=2

then subtract the three from both sides to get like terms

2x=2-3

2x=-1

divide both sides by the 2 to get x by itself

x=-1/2 (your answer)

to check this answer multiply

2 (-1/2) + 3 = 2

-2/2 + 3=2

-1+3=2