Solving tax/interest rate problem

Question

Christine bought a desktop computer and a laptop computer. Before finance charges, the laptop cost $200 less than the desktop. She paid for the computers using two different financing plans. For the desktop the interest rate was 8% per year, and for the laptop it was 6.5% per year. The total finance charges for one year were $335. How much did each computer cost before finance charges?

Answer 1

d represents cost of desktop

d - 200 represents cost of laptop

0.08d + 0.065(d - 200) = 335

Can you solve for d and answer?