Kristal is single and claims one exemption. Last year she earned $37,800 in wages. Additional tax information for the year is as follows: Interest earned: $128; capital gains from sale of stock: $1,850; alimony paid: $6,400; contributions to IRA retirement fund: $2,700; real estate taxes paid: $1,600; mortgage interest paid: $5,300. Find the taxable income for the year.

THE ANSWER IS $19,878

I JUST NEED THE WORK TO KNOW HOW TO SOLVE IT.