CuSO4 + FeSO4 + 2Fe(OH)2

Explanation:

CuSO4 is copper(II) sulfateFeSO4 is iron(II) sulfateFe(OH)2 is iron(II) hydroxide

Therefore, the reaction equation would be:
CuSO4 + FeSO4 + 2Fe(OH)2 -> CuSO4 + FeSO4 + 2Fe(OH)2